add formatter pipeline

Author: SteffenLm

.github/workflows/format.yaml

@@ -0,0 +1,14 @@
+name: format and commit all java files
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - 'steffen'
+
+jobs:
+  formatting:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: axel-op/googlejavaformat-action@v3

java2/generics/genericteam/Team.java

@@ -20,7 +20,7 @@ public void printTeamName() {
 
     public void printPlayerNames() {
         for (T player : players) {
-            System.out.println(player.name) // Problem
+            System.out.println(player.name); // Problem
         }
     }