Refactor: Modernize SocketService, remove hardcoded URL, and update RxJS

[Anurag-elitx]

📋 Description

JIRA ID: #130

This PR modernizes the SocketService by addressing legacy patterns that hinder the migration to Angular 19 and RxJS 7+.

Key Changes:

1. Removed Hardcoded URL: Moved the hardcoded IP address http://10.208.122.38:4000/ out of the service and into the environment configuration. It is now exposed via ConfigService.
2. Updated Deprecated RxJS: Replaced Observable.create() with the standard new Observable() constructor in getMessages and getDebugMessage.
3. Improved Connection Management: Added @Injectable() decorator and ensured that re-instantiating the socket disconnects the old one first to prevent memory leaks and duplicate listeners.
4. Environment Template: Added SOCKET_URL to environment.ci.ts.template to guide other developers on required configuration.

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✅ Type of Change

• 🐞 Bug fix (non-breaking change which resolves an issue)
• ✨ New feature (non-breaking change which adds functionality)
• 🔥 Breaking change (fix or feature that would cause existing functionality to not work as expected)
• 🛠 Refactor (change that is neither a fix nor a new feature)
• ⚙️ Config change (configuration file or build script updates)
• 📚 Documentation (updates to docs or readme)
• 🧪 Tests (adding new or updating existing tests)
• 🎨 UI/UX (changes that affect the user interface)
• 🚀 Performance (improves performance)
• 🧹 Chore (miscellaneous changes that don't modify src or test files)

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ℹ️ Additional Information

• Verified that the service structure aligns with modern Angular practices.
• The change is non-breaking as the default URL remains the same (via environment), but it is now configurable.

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Configuration used: defaults

Review profile: CHILL

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Run ID: 8139b8da-83da-4417-8a4a-2c3538849b3a

📥 Commits

Reviewing files that changed from the base of the PR and between df5db19 and 7a56356.

📒 Files selected for processing (3)

• src/app/services/config/config.service.ts
• src/app/services/socketService/socket.service.ts
• src/environments/environment.ci.ts.template

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🧪 Generate unit tests (beta)

• Create PR with unit tests

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