Add workflow to create pull requests automatically

Author: calebkiage

.github/CODEOWNERS

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+* @calebkiage @baywet @zengin @MichaelMainer @andrueastman @peombwa @jobala @samwelkanda

.github/workflows/create-v1.0-pull-request.yml

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+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License.
+
+# This action will automatically create a pull request against main if the pushed branch
+# has a branch path spec likev 1.0/pipelinebuild/*. Configure this action by updating the
+# environment variable values[0]. 
+
+name: "create pull request"
+
+# Controls when the action will run. Triggers the workflow on push
+# events but only for branches with the following branch spec: "v1.0/pipelinebuild/*"
+on:
+  push:
+    branches:
+      - "v1.0/pipelinebuild/*"
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  # This workflow contains a single job called "create-pull-request"
+  create-pull-request:
+    # GitHub Actions don't support skip ci yet like Azure Pipelines so this check will do the same. 
+    if: github.event_name == 'push' && contains(toJson(github.event.commits), '***NO_CI***') == false && contains(toJson(github.event.commits), '[ci skip]') == false && contains(toJson(github.event.commits), '[skip ci]') == false
+    # The type of runner that the job will run on
+    runs-on: ubuntu-latest
+    # https://github.com/actions/virtual-environments/blob/master/images/linux/Ubuntu1804-README.md
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+    # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+    - uses: actions/[email protected]
+    
+    # Create a pull request [1]
+    - name: Create PR using the GitHub REST API via hub
+      shell: bash
+      env:
+        GITHUB_TOKEN: ${{ secrets.PERSONAL_TOKEN }}
+        MESSAGE_TITLE: Generated v1.0 models and request builders using Kiota
+        MESSAGE_BODY: "This pull request was automatically created by the GitHub Action, **${{github.workflow}}**. \n\n The commit hash is _${{github.sha}}_. \n\n **Important** Check for unexpected deletions or changes in this PR."
+        ASSIGNEDTO: calebkiage
+        LABELS: generated
+        BASE: main
+      run: |
+        curl -fsSL https://github.com/github/hub/raw/master/script/get | bash -s 2.14.1
+        bin/hub pull-request -b "$BASE" -h "$GITHUB_REF" -m "$MESSAGE_TITLE" -m "$MESSAGE_BODY" -a "$ASSIGNEDTO" -l "$LABELS"
+      
+# References
+# [0] https://help.github.com/en/actions/configuring-and-managing-workflows/using-environment-variables
+# [1] https://hub.github.com/hub-pull-request.1.html
+# https://help.github.com/en/actions/configuring-and-managing-workflows/authenticating-with-the-github_token