Added help text and problem matcher

Signed-off-by: dherrada <dylan.herrada@adafruit.com>

Author: evaherrada

.github/workflows/build.yml

@@ -71,3 +71,5 @@ jobs:
         python setup.py sdist
         python setup.py bdist_wheel --universal
         twine check dist/*
+    - name: Setup problem matchers
+      uses: adafruit/circuitpython-action-library-ci-problem-matchers@v1

.github/workflows/failure-help-text.yml

@@ -0,0 +1,19 @@
+# SPDX-FileCopyrightText: 2021 Scott Shawcroft for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+name: Failure help text
+
+on:
+  workflow_run:
+    workflows: ["Build CI"]
+    types:
+      - completed
+
+jobs:
+  post-help:
+    runs-on: ubuntu-latest
+    if: ${{ github.event.workflow_run.conclusion == 'failure' && github.event.workflow_run.event == 'pull_request' }}
+    steps:
+    - name: Post comment to help
+      uses: adafruit/circuitpython-action-library-ci-failed@v1