Add MaxNodes to Native config (#3427)

* Add MaxNodes to Native

* It compiles...

* Convert nodedb to use new

* Closer but still broken.

* Finally working

* Remove unintended lines

* Don't include a pointer

* Capitalization matters.

* avoid rename in protocol regen

* When trimming the nodeDB, start with a cleanup

* Remove extra cleanupMeshDB() call for now

---------

Co-authored-by: Ben Meadors <benmmeadors@gmail.com>

src/shutdown.h

@@ -26,6 +26,8 @@ void powerCommandsCheck()
         SPI.end();
         Wire.end();
         Serial1.end();
+        if (screen)
+            delete screen;
         reboot();
 #else
         rebootAtMsec = -1;