Add Github Actions and PR template

.github/pull_request_template.md

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+## Overview:
+
+## Related:
+
+- [TUP-1234](https://jira.tacc.utexas.edu/browse/TUP-1234)
+
+## Changes:
+
+## Testing:
+
+1.
+
+## UI:
+
+## Notes:

.github/workflows/main.yml

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+name: CI
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  main:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - uses: nrwl/nx-set-shas@v2
+      - run: npm ci
+
+      # Check linting/formatting of workspace files
+      - run: npx nx workspace-lint
+      - run: npx nx format:check
+
+      # Lint/test/build any apps and libs that have been impacted by the diff.
+      - run: npx nx affected --target=lint --parallel=3
+      - run: npx nx affected --target=test --parallel=3 --ci --code-coverage
+      - run: npx nx affected --target=build --parallel=3