ci: create gh workflow that runs go build

.github/workflows/build.yml

@@ -0,0 +1,29 @@
+name: Build
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+      - release/*
+  workflow_dispatch:
+
+defaults:
+  run:
+    shell: bash
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: 'recursive'
+      - uses: ./.github/actions/install-ubuntu-deps
+      - uses: ./.github/actions/install-go
+      - run: make deps lotus