feat: detect permissions from actions (#137)

* feat: detect permissions from actions

* refactor(test): fix 25 SonarCloud issues by extracting test constants

Resolved all SonarCloud code quality issues for PR #137:
- Fixed 12 string duplication issues (S1192)
- Fixed 13 naming convention issues (S100)

Changes:
- Centralized test constants in appconstants/test_constants.go
  * Added 9 parser test constants for YAML templates
  * Added 3 template test constants for paths and versions
- Updated parser_test.go to use shared constants
- Updated template_test.go to use shared constants
- Renamed 13 test functions to camelCase (removed underscores)

* chore: reduce code duplication

* fix: implement cr fixes

* chore: deduplication

templates_embed/templates/themes/github/readme.tmpl

@@ -45,6 +45,26 @@ jobs:
 {{- end}}
 {{end}}
 
+{{if .Permissions}}
+## 🔐 Permissions
+
+This action requires the following permissions:
+
+| Permission | Access Level |
+|------------|--------------|
+{{- range $key, $value := .Permissions}}
+| `{{$key}}` | `{{$value}}` |
+{{- end}}
+
+**Usage in workflow:**
+```yaml
+permissions:
+{{- range $key, $value := .Permissions}}
+  {{$key}}: {{$value}}
+{{- end}}
+```
+{{end}}
+
 ## 💡 Examples
 
 <details>