ci: add common semantic-release task

.editorconfig

+# top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+end_of_line = lf
+trim_trailing_whitespace = true
+insert_final_newline = true
+charset = utf-8
+indent_style = space
+indent_size = 2

.gitlab-ci.yml

+stages:
+  - validate
+  - release
+
+# variables:
+#   GL_ASDF_GOLANGCI_LINT_VERSION: 1.41.1
+
+include:
+  # disabled as there are no golang files to run
+  # - local: golangci-lint.yml
+  - local: editorconfig-check.yml
+  - local: semantic-release.yml

.releaserc.json

+{
+  "branches": ["main"],
+  "plugins": [
+    [
+      "@semantic-release/commit-analyzer",
+      {
+        "preset": "conventionalcommits"
+      }
+    ],
+    [
+      "@semantic-release/release-notes-generator",
+      {
+        "preset": "conventionalcommits"
+      }
+    ],
+    "@semantic-release/gitlab"
+  ]
+}

README.md

@@ -25,3 +25,38 @@ include:
   - project: 'gitlab-com/gl-infra/common-ci-tasks'
     file: 'editorconfig-check.yml'
 ```
+
+### `semantic_release`
+
+This job will run [`semantic-release`](https://semantic-release.gitbook.io/semantic-release/) on your repository. This allows the repository to be automatically tagged based on [conventional commit](https://www.conventionalcommits.org/en/v1.0.0/) messages.
+
+* Default Stage: `release` (make sure this stage is one of the last in your pipeline)
+
+You will also need a file called `.releaserc.json` included in your project. Copy this one if you are unsure.
+
+```json
+{
+  "branches": ["main"],
+  "plugins": [
+    [
+      "@semantic-release/commit-analyzer",
+      {
+        "preset": "conventionalcommits"
+      }
+    ],
+    [
+      "@semantic-release/release-notes-generator",
+      {
+        "preset": "conventionalcommits"
+      }
+    ],
+    "@semantic-release/gitlab"
+  ]
+}
+```
+
+```yaml
+include:
+  - project: 'gitlab-com/gl-infra/common-ci-tasks'
+    file: 'semantic-release.yml'
+```

semantic-release.yml

+# Will run semantic release versioning on a repository
+#
+# Note:
+# * Runs in the release stage
+
+semantic_release:
+  stage: release
+  image: node:16
+  rules:
+    - if: '$CI_PIPELINE_SOURCE == $CI_COMMIT_BRANCH'
+  variables:
+    GITLAB_URL: $CI_SERVER_URL
+  before_script:
+    - npm install -g
+        @commitlint/cli@^13
+        @commitlint/config-conventional@^13
+        @semantic-release/gitlab@^7
+        conventional-changelog-conventionalcommits@^4
+        semantic-release@^18
+  script:
+    - semantic-release