Add Github Actions for CI

.clj-kondo/nubank/matcher-combinators/config.edn

@@ -0,0 +1,4 @@
+{:linters
+ {:unresolved-symbol
+  {:exclude [(cljs.test/is [match? thrown-match?])
+             (clojure.test/is [match? thrown-match?])]}}}

.github/workflows/ci.yml

@@ -0,0 +1,17 @@
+name: Clojure CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - name: Install dependencies
+      run: lein deps
+    - name: Run tests
+      run: lein test