Add Github CI Actions

.github/workflows/mu2e-build-single-pkg.yml

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+name: Build Single Pkg Workflow
+
+on:
+  push:
+    branches: 
+      - develop
+    paths-ignore:
+      - 'docs/**'
+      - '.github/**'
+  pull_request:
+    branches: [ develop ]
+  workflow_dispatch:
+
+jobs:
+
+  build_single_pkg:
+    name: build single pkg
+    uses: Mu2e/.github/.github/workflows/mu2e-build-single-pkg.yml@stable

.github/workflows/mu2e-develop-cpp-ci.yml

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+name: build-develop
+
+# Controls when the action will run. Workflow runs when manually triggered using the UI
+# or API.
+on:
+  push:
+    branches-ignore: 
+      - develop
+      - stable
+    paths-ignore:
+      - 'docs/**'
+      - '.github/**'
+  pull_request:
+    branches: [ develop ]
+  schedule:
+    - cron: "0 7 * * *"
+
+  workflow_dispatch:
+
+
+jobs:
+  build_against_dev_release:
+    name: Build against develop  
+    uses: Mu2e/.github/.github/workflows/mu2e-develop-cpp-ci.yml@stable

.github/workflows/mu2e-test-single-pkg.yml

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+name: Test Single Pkg Workflow
+
+on:
+  push:
+    branches: 
+      - develop
+    paths-ignore:
+      - 'docs/**'
+      - '.github/**'
+  pull_request:
+    branches: [ develop ]
+  workflow_dispatch:
+
+jobs:
+
+  build_single_pkg:
+    name: test single pkg
+    uses: Mu2e/.github/.github/workflows/mu2e-test-single-pkg.yml@stable