set no generate models if allowed table value is empty in bff mode

[vani-rf]

[x] prevent import table when mode is bff and ALLOWED_TABLE is empty
[x] support log setup log level, and configure from config. new config :

LOG_LEVEL: trace | debug | warning | error  | info

[x] enhance default breaker enable to false

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Flag	Coverage Δ
-race	72.30% <100.00%> (+0.54%)	⬆️
-tags "sonic avx"	72.30% <100.00%> (+0.46%)	⬆️
-tags go_json	72.30% <100.00%> (+0.48%)	⬆️
-tags nomsgpack	72.31% <100.00%> (+1.65%)	⬆️
go-1.21	72.01% <100.00%> (+0.08%)	⬆️
go-1.22	72.34% <100.00%> (?)
macos-latest	72.33% <100.00%> (?)
ubuntu-latest	72.33% <100.00%> (+0.40%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
config.go	82.53% <ø> (ø)
logger.go	100.00% <100.00%> (ø)
pkg/db/postgrest_request.go	73.68% <100.00%> (+0.23%)	⬆️
pkg/resource/load.go	100.00% <100.00%> (ø)
server.go	61.17% <100.00%> (+2.42%)	⬆️

... and 61 files with indirect coverage changes