chore: add build + test Just targets, basic GHA CI workflow

.github/workflows/pull-request.yaml

@@ -0,0 +1,19 @@
+name: pull request
+on:
+  pull_request:
+
+jobs:
+  test:
+    name: test
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v5
+      - name: Install just
+        uses: taiki-e/install-action@just
+      - name: Setup Go
+        uses: actions/setup-go@v6
+        with:
+          go-version-file: go.mod
+      - name: Build and run tests
+        run: just test

.gitignore

@@ -0,0 +1,8 @@
+minispire
+
+# don't ignore pkgs named the same as binary!
+!minispire/
+
+# ide workspaces
+.idea
+.vscode

Justfile

@@ -1,3 +1,8 @@
 proto-gen:
     buf generate --path ./pkg/wimse
 
+build:
+    go build -o minispire ./cmd/main.go
+
+test *args:
+    go run gotest.tools/gotestsum@latest --format github-actions ./... {{args}}

go.mod

@@ -1,6 +1,6 @@
 module github.com/cofide/minispire
 
-go 1.25.2
+go 1.25.3
 
 require (
 	github.com/cofide/cofide-sdk-go v0.4.0