* feat: Added simple, configurable rate limit for lightpush and store-query
Adjust lightpush rest response to rate limit, added tests ann some fixes
Add rest store query test for rate limit checks and proper error response
Update apps/wakunode2/external_config.nim
Move chronos/tokenbucket to nwaku codebasee with limited and fixed feature set
Add meterics counter to lightpush rate limits
Co-authored-by: gabrielmer <101006718+gabrielmer@users.noreply.github.com>
