feat: envoy support

[james-d-elliott]

This effectively adds support for envoy. Docs to come.

[authelia]

Artifacts

These changes are published for testing on Buildkite, DockerHub and GitHub Container Registry.

Docker Container

• docker pull authelia/authelia:feat-envoy
• docker pull ghcr.io/authelia/authelia:feat-envoy

[codecov]

Codecov Report

Merging #3793 (b6a9ff9) into master (18a2bde) will increase coverage by 0.09%.
The diff coverage is 83.01%.

❗ Current head b6a9ff9 differs from pull request most recent head 19a8cdb. Consider uploading reports for the commit 19a8cdb to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3793      +/-   ##
==========================================
+ Coverage   69.17%   69.27%   +0.09%     
==========================================
  Files         258      258              
  Lines       16228    16252      +24     
  Branches      434      435       +1     
==========================================
+ Hits        11226    11258      +32     
+ Misses       4313     4306       -7     
+ Partials      689      688       -1     

Flag	Coverage Δ
backend	70.04% <93.47%> (+0.09%)	⬆️
frontend	62.63% <14.28%> (+0.03%)	⬆️

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

Impacted Files	Coverage Δ
internal/oidc/types.go	100.00% <ø> (ø)
web/src/services/Consent.ts	20.00% <0.00%> (ø)
.../src/views/LoginPortal/ConsentView/ConsentView.tsx	20.18% <16.66%> (-0.92%)	⬇️
internal/handlers/handler_oidc_consent.go	31.75% <25.00%> (ø)
...nal/handlers/handler_oidc_authorization_consent.go	40.63% <100.00%> (ø)
internal/handlers/handler_verify.go	76.79% <100.00%> (+0.65%)	⬆️
internal/handlers/util.go	100.00% <100.00%> (ø)
internal/middlewares/authelia_context.go	74.13% <100.00%> (+0.45%)	⬆️
internal/server/handlers.go	93.10% <100.00%> (+0.07%)	⬆️
... and 1 more

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[nightah]

LGTM, great work with this!

[james-d-elliott]

LGTM, great work with this!

Likewise, we knocked this out so damn quickly. Really helps to have a few sets of eyes.

[nightah]

Looks like we left a couple debug log lines in since we were trying to fix this.

[nightah]

LGTM.