Add Evaluate method to DTP proxy

[EricHripko]

Overview

This PR add Evaluate method and upgrades Buildkit from 0.10.0 to 0.11.2.

Other changes

• Move from golang/mock to go.uber.org/mock/gomock, which is a newer fork that supports mocking generics
• Upgrade codecov/codecov-action to v4, as old one appears to have stopped working

[EricHripko]

mockgen currently fails on the following:

2023/02/06 11:40:16 Failed to format generated source code: mock/client.go:102:102: missing ',' in type argument list (and 1 more errors)

...which matches the following line:

func (m *MockClient) Solve(arg0 context.Context, arg1 client.SolveRequest) (*result.Result[github.com/moby/buildkit/frontend/gateway/client.Reference], error) {

Seems like mockgen currently is not able to handle generics, golang/mock#669 should fix (although it's been open for nearly 8 months 😬

[ashb]

@EricHripko Looks like mockgen has been updated finally -- uber-go/mock#13 Any chance you have some cycles to get this change landed?

[github-actions]

Unit Test Results

63 tests   63 ✔️  5s ⏱️
  6 suites    0 💤
  1 files      0 ❌

Results for commit 024f886.

♻️ This comment has been updated with latest results.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 89.74%. Comparing base (566a585) to head (024f886).
Report is 2 commits behind head on main.

Files	Patch %	Lines
pkg/dtp/proxy.go	0.00%	2 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main      #12      +/-   ##
==========================================
- Coverage   90.86%   89.74%   -1.13%     
==========================================
  Files           5        5              
  Lines         219      273      +54     
==========================================
+ Hits          199      245      +46     
- Misses         16       24       +8     
  Partials        4        4              

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[EricHripko]

@ashb thank you for the ping and sorry for the delay! This should now be available via v0.3.0 🙂