wip: mover reusable workflow de prueba a .gitea/workflows (Gitea lo exige)

pipelines/_test-reusable.yaml

@@ -1,17 +0,0 @@
-on:
-  workflow_call:
-    inputs:
-      greeting:
-        type: string
-        required: true
-
-jobs:
-  test:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - uses: devops/platform-templates/devsecops-snippets/gitleaks-step@main
-        with:
-          source: devsecops-snippets
-      - shell: bash
-        run: echo "Reusable workflow input recibido -> '${{ inputs.greeting }}'"