add gh workflow for rust code checks #14

	---
	name: PR checks for rust server backend

	on:
	pull_request:

	concurrency:
	group: '${{ github.workflow }} @ ${{ github.head_ref \|\| github.ref }}'
	cancel-in-progress: true

	jobs:
	changed-files:
	name: Check changes for rust server app
	runs-on: minafoundation-default-interruptible-runners
	steps:
	- name: 📥 Checkout
	uses: actions/checkout@v4
	- uses: tj-actions/changed-files@v39
	id: changed
	with:
	files_yaml: \|
	server:
	- 'server/**'
	write_output_files: true
	outputs:
	modified_keys: ${{ steps.changed.outputs.modified_keys }}
	rust-checks:
	env:
	CARGO_TERM_COLOR: always
	needs: changed-files
	if: needs.changed-files.outputs.modified_keys != '[]' && needs.changed-files.outputs.modified_keys != ''
	name: Rust PR Checks
	runs-on: minafoundation-default-interruptible-runners
	steps:
	- uses: actions/checkout@v4
	- run: rustup toolchain install stable --profile minimal
	- uses: Swatinem/rust-cache@v2
	with:
	workspaces: ./server
	- name: ✍️ Check formatting
	run: cargo fmt --all -- --check
	working-directory: ./server
	- name: 🧐 Check linting
	run: cargo clippy -- -D warnings -D clippy::unwrap_used
	working-directory: ./server
	- name: 🏗️ Build the app
	run: cargo build --release
	working-directory: ./server
	- name: 📋 Run the tests
	run: cargo test --locked --all-features --all-targets
	working-directory: ./server

Provide feedback