feat(config): configuration override using env vars, enable/disable graphiql via config

[dotansimha]

Closes #508

TODO

• setup nice way to define env vars and their overrides
• Define logger overrides
• Define supergraph overrides (file/hive)
• Define HTTP overrides
• Remove existing config extractor
• Fix printing of error message in cases where server fails to start and logger is not configured yet
• graphiql disable/enable
• hive supergraph poll interval
• Fix CI
• Update docs and README
• Docs docs(router): added documentation for env vars console#7172

[github-actions]

✅ k6-benchmark results

     ✓ response code was 200
     ✓ no graphql errors
     ✓ valid response structure

     █ setup

     checks.........................: 100.00% ✓ 198240      ✗ 0    
     data_received..................: 5.8 GB  193 MB/s
     data_sent......................: 78 MB   2.6 MB/s
     http_req_blocked...............: avg=4.17µs  min=661ns   med=1.71µs  max=7.02ms   p(90)=2.65µs   p(95)=3.19µs  
     http_req_connecting............: avg=1.27µs  min=0s      med=0s      max=3.7ms    p(90)=0s       p(95)=0s      
     http_req_duration..............: avg=22.22ms min=2.15ms  med=21.14ms max=146.45ms p(90)=30.55ms  p(95)=34.06ms 
       { expected_response:true }...: avg=22.22ms min=2.15ms  med=21.14ms max=146.45ms p(90)=30.55ms  p(95)=34.06ms 
     http_req_failed................: 0.00%   ✓ 0           ✗ 66100
     http_req_receiving.............: avg=177.8µs min=26.04µs med=41.62µs max=114.8ms  p(90)=100.18µs p(95)=451.83µs
     http_req_sending...............: avg=26.07µs min=5.98µs  med=11.15µs max=26.32ms  p(90)=18.23µs  p(95)=28.77µs 
     http_req_tls_handshaking.......: avg=0s      min=0s      med=0s      max=0s       p(90)=0s       p(95)=0s      
     http_req_waiting...............: avg=22.01ms min=2.06ms  med=21ms    max=60.28ms  p(90)=30.28ms  p(95)=33.67ms 
     http_reqs......................: 66100   2198.505951/s
     iteration_duration.............: avg=22.69ms min=6.77ms  med=21.51ms max=268.06ms p(90)=31.02ms  p(95)=34.6ms  
     iterations.....................: 66080   2197.840745/s
     vus............................: 50      min=50        max=50 
     vus_max........................: 50      min=50        max=50 

[github-actions]

🐋 This PR was built and pushed to the following Docker images:

Image Names: ghcr.io/graphql-hive/router

Platforms: linux/amd64,linux/arm64

Image Tags: ghcr.io/graphql-hive/router:pr-519 ghcr.io/graphql-hive/router:sha-c44925c

Docker metadata

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