feat(dart): add pub.dev publishing support (#527)

- Remove `publish_to: none` from dart/dotprompt/pubspec.yaml to allow
  publishing to pub.dev.
- Add `dart_pub_publish` and `dart_pub_get` targets to both
  dart/dotprompt/BUILD.bazel and dart/handlebarrz/BUILD.bazel.
- Enhance Gazelle extension to auto-generate `dart_pub_get` and
  `dart_pub_publish` targets when a pubspec.yaml is found.
  - `dart_pub_get` is always generated (dependency resolution).
  - `dart_pub_publish` is only generated when `publish_to` is not
    set to `none` (checked via new [IsPublishable()](cci:1://file:///Users/yesudeep/code/github.com/google/dotprompt/bazel/rules_dart/gazelle/pubspec/types.go:27:0-31:1) method on
    the [Pubspec](cci:2://file:///Users/yesudeep/code/github.com/google/dotprompt/bazel/rules_dart/gazelle/pubspec/types.go:19:0-25:1) struct).
- Add `PublishTo` field to [Pubspec](cci:2://file:///Users/yesudeep/code/github.com/google/dotprompt/bazel/rules_dart/gazelle/pubspec/types.go:19:0-25:1) struct in gazelle/pubspec/types.go.
- Add go.work with all 4 Go modules for local development.
- Update all go.mod files to go 1.25 and go.work to go 1.26
  (support the two most recent Go releases).

Author: yesudeep

.github/workflows/go.yml

@@ -133,7 +133,7 @@ jobs:
     if: needs.check-paths.outputs.any_changed == 'true'
     strategy:
       matrix:
-        go-version: ["1.24.x", "1.25.x"]
+        go-version: ["1.25.x", "1.26.x"]
       fail-fast: false
 
     name: Go ${{ matrix.go-version }} Tests

.github/workflows/golangci-lint.yml

@@ -54,9 +54,9 @@ jobs:
         with:
           go-version: stable
       - name: golangci-lint
-        uses: golangci/golangci-lint-action@v6
+        uses: golangci/golangci-lint-action@v7
         with:
-          version: v1.64
+          version: v2.10.1
           working-directory: go
 
   golangci-lint-all:

.gitignore

@@ -19,6 +19,7 @@ target/
 .dart_tool/
 .packages
 .pub-cache/
+go.work
 go.work.sum
 packages/jetbrains/.gradle
 packages/jetbrains/bin/