move ExecRes to more generic class ProcessExecutor

src/de/uni_passau/fim/seibt/gitwrapper/process/ProcessExecutor.java

+package de.uni_passau.fim.seibt.gitwrapper.process;
+
+public class ProcessExecutor {
+
+    /**
+     * The result of a command line execution.
+     */
+    public static class ExecRes {
+        public int code;
+        public String output;
+    }
+}

src/de/uni_passau/fim/seibt/gitwrapper/repo/Commit.java

@@ -9,7 +9,7 @@ import java.util.function.Function;
 import java.util.logging.Logger;
 import java.util.stream.Collectors;
 
-import de.uni_passau.fim.seibt.gitwrapper.repo.GitWrapper.ExecRes;
+import de.uni_passau.fim.seibt.gitwrapper.process.ProcessExecutor.ExecRes;
 
 /**
  * A {@link Commit} made in a {@link Repository}.

src/de/uni_passau/fim/seibt/gitwrapper/repo/GitWrapper.java

@@ -10,6 +10,7 @@ import java.util.logging.Logger;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
+import de.uni_passau.fim.seibt.gitwrapper.process.ProcessExecutor.ExecRes;
 import org.apache.commons.io.IOUtils;
 
 /**
@@ -25,14 +26,6 @@ public class GitWrapper {
     private static final Pattern CLONING_INTO = Pattern.compile("Cloning into '(.*)'\\.\\.\\.");
     private static final Pattern ALREADY_EXISTS = Pattern.compile("fatal: destination path '(.*)' already exists and is not an empty directory\\.");
 
-    /**
-     * The result of a command line execution.
-     */
-    static class ExecRes {
-        int code;
-        String output;
-    }
-
     private String git;
 
     /**

src/de/uni_passau/fim/seibt/gitwrapper/repo/Repository.java

@@ -14,7 +14,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 import java.util.stream.Collectors;
 
-import de.uni_passau.fim.seibt.gitwrapper.repo.GitWrapper.ExecRes;
+import de.uni_passau.fim.seibt.gitwrapper.process.ProcessExecutor.ExecRes;
 
 /**
  * A git {@link Repository}.