feat: scaffold UI templates

[AlexD10S]

Closes #663

New flag --with-frontend in pop new that supports frontend for contracts and chains. Currently it supports a curated set of community templates:
Contracts: inkathon, typink
Chain: create-dot-app

How to test

# Install with 
cargo install --git https://github.com/r0gue-io/pop-cli.git --branch  feat/scaffold-ui-templates --locked

# Interactive will prompt you for frontend template
pop new chain / pop new contract
# Or just CLI
pop new chain my-chain --with-frontend
pop new contract flipper --with-frontend
# To specify the template with the CLI
pop new chain my-chain --with-frontend=create-dot-app 
pop new contract flipper --with-frontend=typink

It prompts the user to install the needed dependencies if not installed: A version >= 20 of node & bun for inkathon.
It also also includes --frontend in pop install to cover the installation of these dependencies:

pop install -y --frontend

And it provides with a command to easily start the frontend dev server:

pop up frontend

Ideally, pop up would also spin up the local chain (or deploy the contract) and start the frontend dev server in one go. But that's trickier than it looks, because both spinning up the chain/contract and running the frontend are long-running processes that block indefinitely.

Future improvements:

• inkathon template can show some problems, currently investigating it Failing to scaffold a new project create-inkathon-app@latest scio-labs/inkathon#88
• Possibility to include more community templates, e.g create-polkadot-dapp for parachain templates in the future.

[codecov]

Codecov Report

❌ Patch coverage is 47.46193% with 207 lines in your changes missing coverage. Please review.
✅ Project coverage is 76.59%. Comparing base (4c38fc3) to head (e54e9a6).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/pop-cli/src/commands/install/frontend.rs	20.21%	71 Missing and 4 partials ⚠️
crates/pop-cli/src/commands/new/frontend.rs	46.91%	40 Missing and 3 partials ⚠️
crates/pop-cli/src/commands/up/frontend.rs	53.08%	30 Missing and 8 partials ⚠️
crates/pop-cli/src/commands/new/chain.rs	0.00%	22 Missing ⚠️
crates/pop-cli/src/commands/new/contract.rs	51.72%	9 Missing and 5 partials ⚠️
crates/pop-cli/src/commands/install/mod.rs	61.11%	7 Missing ⚠️
crates/pop-common/src/templates/frontend.rs	92.30%	5 Missing ⚠️
crates/pop-cli/src/commands/mod.rs	0.00%	1 Missing ⚠️
crates/pop-cli/src/commands/new/mod.rs	50.00%	1 Missing ⚠️
crates/pop-cli/src/commands/up/mod.rs	0.00%	1 Missing ⚠️

@@            Coverage Diff             @@
##             main     #676      +/-   ##
==========================================
- Coverage   77.06%   76.59%   -0.47%     
==========================================
  Files         109      113       +4     
  Lines       24667    25050     +383     
  Branches    24667    25050     +383     
==========================================
+ Hits        19010    19188     +178     
- Misses       3654     3841     +187     
- Partials     2003     2021      +18     

Files with missing lines	Coverage Δ
crates/pop-cli/src/common/binary.rs	72.65% <ø> (ø)
crates/pop-common/src/lib.rs	83.82% <ø> (ø)
crates/pop-common/src/templates/mod.rs	78.57% <ø> (ø)
crates/pop-cli/src/commands/mod.rs	67.50% <0.00%> (-0.34%)	⬇️
crates/pop-cli/src/commands/new/mod.rs	76.81% <50.00%> (-0.81%)	⬇️
crates/pop-cli/src/commands/up/mod.rs	71.42% <0.00%> (-0.74%)	⬇️
crates/pop-common/src/templates/frontend.rs	92.30% <92.30%> (ø)
crates/pop-cli/src/commands/install/mod.rs	41.47% <61.11%> (-0.26%)	⬇️
crates/pop-cli/src/commands/new/contract.rs	79.11% <51.72%> (-3.39%)	⬇️
crates/pop-cli/src/commands/new/chain.rs	47.97% <0.00%> (-2.51%)	⬇️
... and 3 more

... and 1 file with indirect coverage changes

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[Copilot]

Pull Request Overview

This PR adds frontend scaffolding capabilities to Pop CLI through a new --with-frontend flag for the pop new chain and pop new contract commands. The feature supports curated community templates for both contracts (inkathon, typink) and chains (create-polkadot-dapp, create-dot-app), and integrates frontend development server startup into the pop up command.

Key changes:

• Introduces FrontendType and FrontendTemplate enums to represent and configure frontend templates
• Adds --with-frontend flag to contract and chain creation commands with interactive template selection
• Extends pop up command to automatically start frontend dev servers when a frontend directory is detected

Reviewed Changes

Copilot reviewed 14 out of 14 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
crates/pop-common/src/templates/mod.rs	Exports new frontend module
crates/pop-common/src/templates/frontend.rs	Defines frontend template types and configuration
crates/pop-common/src/lib.rs	Exports frontend types for public API
crates/pop-cli/src/common/binary.rs	Extends feature flags to include contract features
crates/pop-cli/src/commands/up/network.rs	Adds frontend server support to network command
crates/pop-cli/src/commands/up/mod.rs	Adds frontend module and updates test defaults
crates/pop-cli/src/commands/up/frontend.rs	Implements frontend directory resolution and server startup
crates/pop-cli/src/commands/up/contract.rs	Adds frontend server support to contract deployment
crates/pop-cli/src/commands/new/mod.rs	Updates command defaults with frontend flag
crates/pop-cli/src/commands/new/frontend.rs	Implements frontend template selection and creation
crates/pop-cli/src/commands/new/contract.rs	Integrates frontend scaffolding into contract creation
crates/pop-cli/src/commands/new/chain.rs	Integrates frontend scaffolding into chain creation
crates/pop-cli/src/commands/install/mod.rs	Exports new frontend installation module
crates/pop-cli/src/commands/install/frontend.rs	Implements installation checks for Node, npx, and Bun

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[AlexD10S]

https://nodejs.org/en/download

[AlexD10S]

https://bun.com/docs/installation