feat(server): support AWS Cognito auth server

[yk-eukarya]

No description provided.

[netlify]

✅ Deploy Preview for reearth-web canceled.

Name	Link
🔨 Latest commit	20e3f3d
🔍 Latest deploy log	https://app.netlify.com/sites/reearth-web/deploys/64759e4dbdd07900080242a5

[codecov]

Codecov Report

Merging #450 (20e3f3d) into main (f27b788) will decrease coverage by 0.02%.
The diff coverage is 43.49%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #450      +/-   ##
==========================================
- Coverage   36.25%   36.24%   -0.02%     
==========================================
  Files         342      346       +4     
  Lines       30988    30987       -1     
==========================================
- Hits        11236    11231       -5     
- Misses      18651    18657       +6     
+ Partials     1101     1099       -2     

Flag	Coverage Δ
server	36.24% <43.49%> (-0.02%)	⬇️

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

Impacted Files	Coverage Δ
server/internal/app/app.go	0.00% <0.00%> (ø)
server/internal/app/auth_client.go	0.00% <0.00%> (ø)
server/internal/app/config/marketplace.go	0.00% <0.00%> (ø)
server/internal/app/graphql.go	0.00% <0.00%> (ø)
server/internal/app/jwt.go	0.00% <0.00%> (ø)
server/internal/app/main.go	0.00% <0.00%> (ø)
server/internal/app/repo.go	0.00% <0.00%> (ø)
server/internal/app/tracer.go	0.00% <0.00%> (ø)
server/internal/app/usecase.go	36.84% <0.00%> (+5.02%)	⬆️
server/internal/app/config/auth_server.go	22.22% <22.22%> (ø)
... and 6 more

[rot1024]

Creating the config package is a very good idea.