feat/WIP: e2e sibling test

[lucas-zimerman]

This PR introduces new tests to evaluate how package managers behave when installing or updating sibling SDKs alongside Sentry Capacitor.

Tests Included:

1. Updating Existing Installations

   • Run yarn install/npm install when both Sentry Capacitor and a sibling SDK are already installed to update the libraries.

2. Adding a Sibling SDK

   • Install a sibling SDK using yarn add ... or npm install ... when Sentry Capacitor is already installed.

3. Fresh Installations

   • Install both Sentry Capacitor and a sibling SDK when neither is currently installed.

Validation:

For each test involving sibling SDKs:

• Verify success when the correct sibling versions are installed.
• Ensure failures occur for incompatible versions.

Coverage:

This PR will cover npm, Yarn Classic, and Yarn v3. By adding these tests, we significantly enhance the coverage for installation and update scenarios involving Sentry Capacitor, ensuring better reliability and user experience.

#skip-changelog

[lucas-zimerman]

We create this folder because it loads faster than pointing yarn to install the root project (10 minutes vs 5 seconds) on the sibling tests

[github-actions]

This pull request has gone three weeks without activity. In another week, I will close it.

But! If you comment or otherwise update it, I will reset the clock, and if you label it Status: Backlog or Status: In Progress, I will leave it alone ... forever!

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"A weed is but an unloved flower." ― Ella Wheeler Wilcox 🥀