feat: Implement subscription management and request limits

[UdulaThathsaridu5624]

Description

• Added SubscriptionManager to handle user subscription status and usage.
• Integrated subscription checks in CICD, Code Generation, Quality Assurance, and Runtime Analysis panels to enforce request limits.
• Created SubscriptionStatus and SubscriptionTier data classes to represent subscription details.
• Introduced UI components for subscription management, including PricingDialog and RequestLimitDialog.
• Updated SpringForgeToolWindowPanel to display subscription status and provide upgrade options.
• Enhanced user experience by notifying users when they reach their request limits and allowing them to upgrade their plans.

Type of Change

• Bug fix (non-breaking change which fixes 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)
• Documentation update
• Refactoring (no functional changes)
• Performance improvement
• Code cleanup

Related Issue(s)

Fixes #
Closes #
Related to #

Changes Made

Testing

• Unit tests added/updated
• Integration tests added/updated
• Manual testing completed

Test Configuration:

• Device/OS:
• Node version:
• Other relevant info:

Screenshots/Videos

Checklist

• My code follows the project's style guidelines
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have updated the documentation accordingly
• My changes generate no new warnings or errors
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published

Additional Notes