docs: Added skills for pgvectorscale, pg_textsearch

fix: Changed ORJSONResponse to native FastAPI serialiser

fix: Added trigram search in search/

fix: Fixes the code for search using postgres Extensions

fix: Fixed the RAG strategies code

feat: Added better support and security for WS

chore: Corrected the use of APIReponse Envelope and http_response

docs: Updated README.md

feat: Added knowledge tools and memory component

feat: Added nodes and graph edges for agent Saul

refactor: Updated docs and added cognee client

fix: Added production hardness to tool calls and more

feat: Added HTTP MCP client template

chore: Added FastMCP skill

feat: Added lua scripts for rate-limit & circuit breaker