chore(workflow): gh workflow to unpublish package versions from npm

.github/workflows/unpublish.yml

@@ -0,0 +1,22 @@
+name: Unpublish
+on:
+    workflow_dispatch:
+        inputs:
+            version:
+                description: 'version to unpublish'
+                required: true
+jobs:
+    release:
+        name: Unpublish
+        runs-on: ubuntu-latest
+        steps:
+            - name: 'Set npm token'
+              uses: './.github/actions/set-npm-token'
+              with:
+                  npm-token: ${{ secrets.NPM_PUBLISH_TOKEN }}
+
+            - name: Unpublish npm package version
+              env:
+                  GITHUB_TOKEN: ${{ secrets.FLOW_GITHUB_TOKEN }}
+                  NPM_TOKEN: ${{ secrets.NPM_PUBLISH_TOKEN }}
+              run: npm unpublish @telefonica/mistica@${{ github.event.inputs.version }}