Use GitHub glob support for paths input (#38)

* feat: Add glob pattern support for file inputs

- Replace direct file list splitting with glob pattern expansion
- Use @actions/glob package to handle pattern matching
- Ensure uniqueness of expanded file list by using Set
- Update upload arguments to use expanded file list

* Update dependencies and add tests

- Adds `@actions/glob`
- Adds `vitest`
- Removes `jest`
- Adds a basic unit test

* `npm run package`

* `npm test` in GitHub Actions CI `build` job

.github/workflows/coverage.yml

@@ -5,11 +5,19 @@ on:
   push:
     paths:
       - coverage/**
+      - '**.js'
+      - '**.ts'
+      - '**.test.js'
+      - '**.test.ts'
     branches:
       - main
   pull_request:
     paths:
       - coverage/**
+      - '**.js'
+      - '**.ts'
+      - '**.test.js'
+      - '**.test.ts'
 
 permissions:
   contents: read
@@ -52,7 +60,7 @@ jobs:
             exit 1
           fi
 
-      # - name: Test
-      #   id: npm-ci-test
-      #   working-directory: ./coverage
-      #   run: npm run ci-test
+      - name: Test
+        id: npm-test
+        working-directory: ./coverage
+        run: npm test