Add a menu item to reload the ROM without resetting

Cocoa/Document.m

@@ -2697,6 +2697,20 @@ enum GBWindowResizeAction
     }];
 }
 
+- (IBAction)reloadROM:(id)sender
+{
+    bool wasRunning = _running;
+    if (wasRunning) {
+        [self stop];
+    }
+    
+    [self loadROM];
+
+    if (wasRunning) {
+        [self start];
+    }
+}
+
 - (void)updateDebuggerButtons
 {
     bool updateContinue = false;

Cocoa/MainMenu.xib

@@ -208,6 +208,11 @@
                                     <action selector="reset:" target="-1" id="VV1-VP-L7g"/>
                                 </connections>
                             </menuItem>
+                            <menuItem title="Reload ROM" alternate="YES" keyEquivalent="R" id="eQP-Fb-nkz">
+                                <connections>
+                                    <action selector="reloadROM:" target="-1" id="BpN-8V-Csg"/>
+                                </connections>
+                            </menuItem>
                             <menuItem title="Pause" keyEquivalent="p" id="4K4-hw-R7Q">
                                 <connections>
                                     <action selector="togglePause:" target="-1" id="osW-wt-QAa"/>