extend .proto definitions

[maksymvavilov]

Define gateway API types as proto messages and expand our own Policy type. Changes things around and added fields that seemed useful. I did not went to the v0.1: we should have a discussion about how we want to version things first imo. I also added a script to use protoc to generate descriptions (hopefully, it will work for others)

./pkg/extension/grpc/generate_proto.sh v0

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 80.61%. Comparing base (9ca8620) to head (cd7918f). Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1362      +/-   ##
==========================================
- Coverage   80.64%   80.61%   -0.04%     
==========================================
  Files          93       93              
  Lines        8787     8814      +27     
==========================================
+ Hits         7086     7105      +19     
- Misses       1413     1421       +8     
  Partials      288      288              

Flag	Coverage Δ
bare-k8s-integration	22.59% <0.00%> (+0.15%)	:arrow_up:
controllers-integration	65.72% <0.00%> (-0.51%)	:arrow_down:
envoygateway-integration	37.18% <0.00%> (-0.45%)	:arrow_down:
gatewayapi-integration	17.92% <0.00%> (-0.21%)	:arrow_down:
istio-integration	50.00% <0.00%> (-0.01%)	:arrow_down:
unit	21.34% <100.00%> (+0.19%)	:arrow_up:

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

Components	Coverage Δ
api (u)	81.50% <ø> (ø)
internal (u)	81.88% <100.00%> (-0.10%)	:arrow_down:
pkg (u)	49.70% <100.00%> (+3.99%)	:arrow_up:

Files with missing lines	Coverage Δ
internal/extension/manager.go	2.14% <ø> (ø)
internal/extension/oop.go	46.45% <ø> (-3.15%)	:arrow_down:
internal/extension/reconciler.go	87.85% <100.00%> (+0.23%)	:arrow_up:
pkg/cel/ext/kuadrant.go	87.36% <100.00%> (+4.51%)	:arrow_up:
pkg/extension/controller/controller.go	25.61% <ø> (ø)
pkg/extension/utils/utils.go	93.75% <ø> (ø)

... and 8 files with indirect coverage changes

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[maksymvavilov]

bot, really?