Add github stuff

Author: rklaehn

.github/ansible/redeploy-relay.yml

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+---
+- name: Update iroh-relay node
+  hosts: derper
+  become: yes
+
+  tasks:
+  - name: Fetch iroh-relay binary
+    get_url:
+      url: https://vorc.s3.us-east-2.amazonaws.com/iroh-relay-linux-amd64-{{ relay_version }}
+      mode: '0755'
+      force: yes
+      dest: /usr/local/bin/iroh-relay
+  - name: Allow ports
+    shell:
+      cmd: sudo setcap CAP_NET_BIND_SERVICE=+eip /usr/local/bin/iroh-relay
+  - name: Make sure iroh-relay is started
+    ansible.builtin.systemd:
+      state: restarted
+      enabled: yes
+      name: iroh-relay

.github/dependabot.yml

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+# Keep GitHub Actions up to date with GitHub's Dependabot...
+# https://docs.github.com/en/code-security/dependabot/working-with-dependabot/keeping-your-actions-up-to-date-with-dependabot
+# https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file#package-ecosystem
+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directory: /
+    groups:
+      github-actions:
+        patterns:
+          - "*"  # Group all Actions updates into a single larger pull request
+    schedule:
+      interval: weekly

.github/pull_request_template.md

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+## Description
+
+<!-- A summary of what this pull request achieves and a rough list of changes. -->
+
+## Breaking Changes
+
+<!-- Optional, if there are any breaking changes document them, including how to migrate older code. -->
+
+## Notes & open questions
+
+<!-- Any notes, remarks or open questions you have to make about the PR. -->
+
+## Change checklist
+
+- [ ] Self-review.
+- [ ] Documentation updates following the [style guide](https://rust-lang.github.io/rfcs/1574-more-api-documentation-conventions.html#appendix-a-full-conventions-text), if relevant.
+- [ ] Tests if relevant.
+- [ ] All breaking changes documented.

.github/workflows/beta.yaml

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+# Run tests using the beta Rust compiler
+
+name: Beta Rust
+
+on:
+  schedule:
+    # 06:50 UTC every Monday
+    - cron: '50 6 * * 1'
+  workflow_dispatch:
+
+concurrency:
+  group: beta-${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+env:
+  IROH_FORCE_STAGING_RELAYS: "1"
+
+jobs:
+  tests:
+    uses: './.github/workflows/tests.yaml'
+    with:
+      rust-version: beta
+  notify:
+    needs: tests
+    if: ${{ always() }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Extract test results
+        run: |
+          printf '${{ toJSON(needs) }}\n'
+          result=$(echo '${{ toJSON(needs) }}' | jq -r .tests.result)
+          echo TESTS_RESULT=$result
+          echo "TESTS_RESULT=$result" >>"$GITHUB_ENV"
+      - name: Notify discord on failure
+        uses: n0-computer/discord-webhook-notify@v1
+        if: ${{ env.TESTS_RESULT == 'failure' }}
+        with:
+          severity: error
+          details: |
+            Rustc beta tests failed
+            See https://github.com/n0-computer/iroh/actions/workflows/beta.yaml
+          webhookUrl: ${{ secrets.DISCORD_N0_GITHUB_CHANNEL_WEBHOOK_URL }}
+