implement Profiler#reset

common/src/main/java/com/dfsek/terra/profiler/Profiler.java

@@ -18,7 +18,5 @@ public interface Profiler {
         return new ProfileFrame(() -> pop(frame));
     }
 
-    default void reset() {
-        // todo: impl
-    }
+    void reset();
 }

common/src/main/java/com/dfsek/terra/profiler/ProfilerImpl.java

@@ -83,4 +83,9 @@ public class ProfilerImpl implements Profiler {
         }));
         return map;
     }
+
+    @Override
+    public void reset() {
+        accessibleThreadMaps.forEach(Map::clear);
+    }
 }