Feat: adds testing fixtures for setup/teardown

[alexlwn123]

Trying out copilot generated PR descriptions:

This pull request includes significant changes to the testing setup and documentation for the core-web package. The most important changes involve refactoring test cases to use a new walletTest fixture, adding new test cases for the worker, and updating documentation with additional resources.

Testing Refactor and Additions:

• packages/core-web/src/services/FederationService.test.ts: Refactored test cases to use the new walletTest fixture for better setup and teardown management. [1] [2] [3]
• packages/core-web/src/services/LightningService.test.ts: Similar refactor to use the walletTest fixture, ensuring consistent test environment setup. [1] [2] [3] [4] [5]
• packages/core-web/src/test/setupTests.ts: Introduced walletTest and workerTest fixtures to streamline test setup and teardown processes.
• packages/core-web/src/worker/worker.test.ts: Added new test cases to verify worker initialization, joining a federation, and handling unknown message types.

Additional Changes:

• packages/core-web/src/worker/worker.js: Updated worker initialization logging and added a global fix for the vitest browser runner. [1] [2]
• packages/core-web/src/test/TestingService.ts: Moved the TESTING_INVITE constant to a separate export for better modularity.
• vitest.workspace.ts: Disabled screenshot failures in the Vitest workspace configuration.

[changeset-bot[bot]]

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Latest commit: 44243ed277dc99f208edc080595cd4dd1d99cb99

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[github-actions[bot]]

Size Change: 0 B

Total Size: 7.23 MB

ℹ️ View Unchanged

| Filename | Size | | :--- | :---: | | `packages/core-web/dist/index.js` | 2.21 kB | | `packages/core-web/dist/worker.js` | 646 B | | `packages/wasm-bundler/fedimint_client_wasm_bg.wasm` | 3.61 MB | | `packages/wasm-web/fedimint_client_wasm_bg.wasm` | 3.61 MB |

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