Reactive Programming Optimizations and Documentation Updates for v0.7.0 Release

[mdapena]

Initial Checks

• The code compiles successfully without any errors or warnings.
• I have personally tested these changes on my local environment.
• I have ensured that relevant documentation has been added or updated.
• I adhere to the project structure and code standards defined in the documentation.
• My code follows the established coding style guidelines.
• I have added tests for the new code (if applicable).
• All existing tests have passed successfully.

Description

This pull request introduces a series of optimizations to the execution of observables, along with minor enhancements to the event-driven and reactive programming modules. Key improvements include support for parameters in the @as_observable_task decorator and enhanced type annotations.

Additionally, this pull request features significant updates to the overall documentation in preparation for the v0.7.0 release. Notable changes include revisions to pages such as "Getting Started", "API Reference", "Main Page", and "Contributing", as well as overall enhancements like automatic light and dark mode, instant loading, and the integration of Google Analytics.