Performance and logging updates

• Multiple Performance fixes and updates
• Correcting blocking issue
• adding correlation-id in response headers
• audit log update
• configuration details can also now be provided by .env file (to support local development/testing, on-premise, etc)
• better handling of OPA responses
• documentation update
• CSP build updates

#93 (closed) #98 (closed) #99 (closed) #100 (closed)