Add github workflows

.github/workflows/build.yaml

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+name: Build Solution
+
+on:
+  workflow_call:
+    inputs:
+      branch-postfix:
+        required: false
+        type: string
+
+jobs:
+  build:
+    name: Build Oxide Solution
+    runs-on: windows-2022
+
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v3
+
+      - name: Increment Version
+        uses: action-pack/increment@v2
+        with:
+          name: "VERSION"
+          token: ${{ secrets.REPO_ACCESS_TOKEN }}
+
+      - name: Setup MSBuild
+        uses: microsoft/setup-msbuild@v1
+
+      - name: Restore Packages
+        run: nuget restore Oxide.Rust.sln
+
+      - name: Build Solution
+        run: msbuild Oxide.Rust.sln -t:rebuild -property:Configuration=Release -property:Version=2.0.${{ vars.VERSION }}${{ inputs.branch-postfix }}
+
+      - name: Compress Bundles
+        run: |
+          cd src\bin\Bundle
+          7z a Oxide.Rust.zip Oxide.Rust\*
+          7z a Oxide.Rust-linux.zip Oxide.Rust-linux\*
+
+      - name: Upload Artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: ${{ github.event.repository.name }}
+          path: src\bin\Bundle\Oxide.*.zip

.github/workflows/prerelease.yaml

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+name: Build and Upload Bundles to S3
+
+on:
+  push:
+    branches-ignore:
+      - master
+
+jobs:
+  build:
+    name: Run Build
+    uses: ./.github/workflows/build.yaml
+    secrets: inherit
+    with:
+      branch-postfix: "-${{ github.ref_name }}"
+
+  deploy:
+    name: Deploy to S3
+    uses: OxideMod/Actions/.github/workflows/r2-publish.yml@main
+    needs: build
+    with:
+      generate-filehash: true
+    secrets:
+      CLOUDFLARE_R2_KEY: ${{ secrets.CLOUDFLARE_R2_KEY }}
+      CLOUDFLARE_R2_SECRET: ${{ secrets.CLOUDFLARE_R2_SECRET }}
+      CLOUDFLARE_R2_ENDPOINT: ${{ secrets.CLOUDFLARE_R2_ENDPOINT }}

.github/workflows/release.yaml

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+name: Build and Create Release
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  build:
+    name: Run Build
+    uses: ./.github/workflows/build.yaml
+    secrets: inherit
+
+  release:
+    name: Create Release
+    runs-on: ubuntu-22.04
+    needs: build
+    steps:
+      - name: Download Artifacts
+        uses: actions/download-artifact@v3
+        with:
+          name: ${{ github.event.repository.name }}
+          path: artifacts
+
+      - name: Deploy to GitHub Releases
+        uses: softprops/action-gh-release@v1
+        with:
+          files: |
+            artifacts/Oxide.*.zip
+          tag_name: 2.0.${{ vars.VERSION }}
+          fail_on_unmatched_files: true
+          token: ${{ secrets.GITHUB_TOKEN }}
+          body: |
+            See https://umod.org/games/rust for changes