Add format check for Java code under managed

Author: iSignal

.github/workflows/build.yml

@@ -10,6 +10,7 @@ on:
       - README.md
       - 'docs/**'
       - 'architecture/**'
+      - 'managed/**'
 
   pull_request:
     branches:
@@ -18,6 +19,7 @@ on:
       - README.md
       - 'docs/**'
       - 'architecture/**'
+      - 'managed/**'
 
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
 jobs:

.github/workflows/managed-java-checks.yaml

@@ -0,0 +1,38 @@
+name: Lint java code under managed
+
+on:
+  push:
+    branches:
+      - master
+      - '2.6'
+    paths:
+      - .github/workflows/managed-java-checks.yaml
+      - managed/**/*.java
+
+  pull_request:
+    branches:
+      - master
+      - '2.6'
+    paths:
+      - .github/workflows/managed-java-checks.yaml
+      - managed/**/*.java
+
+
+jobs:
+  lint-checks:
+    name: Lint checks
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Install Java
+        uses: actions/setup-java@v2
+        with:
+          distribution: adopt
+          java-version: 8
+
+      - name: Check formatting
+        run: sbt javafmtCheckAll
+        working-directory: managed/
+