Feature: Support for multiple messages from CodeLens

[alashchev17]

Feature: Support for multiple messages from CodeLens

Description

• Problem: CodeLens logic was tightly relied on content of message and not on messages array itself.
• Solution: Implemented support and formatting of messages from customization.yaml, and proper sending them to the frontend application
• JetBrains: Update CodeLens code to support multiple messages sending

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)
• Refactoring (no functional changes, only code improvements)
• Documentation update

Checklist

• My code follows the code style of this project.
• I have performed a self-review of my code.
• I have commented my code, particularly in hard-to-understand areas.
• 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 in downstream modules.
• I have updated the documentation where necessary.