import from mono-repo and related updates

.github/workflows/main.yml

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+name: Main
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened, labeled]
+  push:
+    branches: 
+      - master
+    tags:
+      - 'v*'
+
+jobs:
+  build:
+    name: Test, build & deploy
+    runs-on: ubuntu-latest
+    if: github.repository == 'wireleap/relay' && (github.event_name != 'pull_request' || contains(github.event.pull_request.labels.*.name, 'testable'))
+    steps:
+    - name: Check out code
+      uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+    - name: Check out private build action
+      uses: actions/checkout@v2
+      with:
+        fetch-depth: 1
+        repository: wireleap/gh-build
+        token: ${{ secrets.ASSEMBLY_TOKEN }}
+        path: .github/actions/gh-build
+    - name: Run component build action
+      uses: ./.github/actions/gh-build
+      with:
+          token: ${{ secrets.ASSEMBLY_TOKEN }}
+          ssh_key: ${{ secrets.SSH_KEY }}
+          upload_target: ${{ secrets.UPLOAD_TARGET }}
+          gpg_key: ${{ secrets.GPG_KEY }}

.gitignore

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+build/
+
+sub/initcmd/embedded/*
+!sub/initcmd/embedded/*.go

LICENSE

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+Copyright 2021 Wireleap
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.