Add prototype of create_new_RSPEC Github Action

.github/workflows/create_new_rspec.yml

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+name: Create New RSPEC
+
+# Workflow runs when manually triggered using the UI or API.
+on:
+  workflow_dispatch:
+    # Inputs the workflow accepts.
+    inputs:
+      languages:
+        description: 'Comma-separated list of targeted languages'
+        required: true
+
+jobs:
+  create_new_rule:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2 # If you're using actions/checkout@v2 you must set persist-credentials to false in most cases for the deployment to work correctly.
+      with:
+        persist-credentials: true
+        ref: rspec-id-counter
+        path: 'rspec-id-counter'
+    - name: 'Increment the RSPEC ID counter'
+      working-directory: 'rspec-id-counter'
+      run: ./scripts/reserve_rspec_id.sh
+    - name: 'Test RSPEC ID'
+      run: echo $RSPEC_ID

scripts/reserve_rspec_id.sh

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+#!/bin/sh
+
+# Script reserving a RSPEC identifier.
+# It is used by the Github Action script "create_new_rspec.yml".
+
+# Stop script in case of error.
+set -e
+
+# Increment the next_id counter.
+next_id=`cat next_rspec_id.txt`
+new_next_id=`expr $next_id + 1`
+echo $new_next_id > next_rspec_id.txt
+git add next_rspec_id.txt
+git commit "Increment RSPEC ID counter"
+git push origin rspec-id-counter
+
+# Set the Environment variable for the next Github Action.
+echo "::set-env name RSPEC_ID=${next_id}"