packwiz build in CI

.github/workflows/modpack.yml

@@ -0,0 +1,25 @@
+name: Build & Publish Minecraft Modpack
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      
+      - name: Install go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.16
+
+      - name: Install packwiz
+        run: go install github.com/packwiz/packwiz@latest
+
+      - name: Build modpack
+        run: packwiz --pack-file ./configs/minecraft/modpack/pack.toml --meta-folder-base ./configs/minecraft/modpack modrinth export