Neo4j DB implementation

[SamanPandey-in]

This PR introduces:

• Dynamic DB Switch between Postgres and Neo4j depending on the repo size
• For conditions and constraints for DB selection, refer the docs/dynamicDb doc file.
• Neo4j Aura (cloud based) is used
• For force testing of DB working, refer and change props from line 181: analyze.controller.js
• Fixed the 429 OpenAI bug gracefully, showed user what the issue is
• Added streaming, and redis caching of the AI output when the node is clicked for it's details and impact
• Added debouncing, better error message and reset impact state in AIPanel
• Removed _saveQuery do prevent duplicate entries save in the DB
• Added auth checkers in the ImpactPanel
• Improved /health endpoint for more detailed output
• Added COALEASE on both sides for the graph heatmap
• Added input and numerical validaters and checkers for better edge case handling

[SamanPandey-in]

• Fixed the 429 OpenAI bug gracefully, showed user what the issue is
• Added streaming, and redis caching of the AI output when the node is clicked for it's details and impact
• Added debouncing, better error message and reset impact state in AIPanel
• Removed _saveQuery do prevent duplicate entries save in the DB
• Added auth checkers in the ImpactPanel
• Improved /health endpoint for more detailed output
• Added COALEASE on both sides for the graph heatmap
• Added input and numerical validaters and checkers for better edge case handling