Removed hardcoded "camera" name reference and manual tween node camera (#411)

Co-authored-by: StraToN <StraToN@users.noreply.github.com>

docs/api/ESCCamera.md

@@ -48,6 +48,8 @@ Target zoom of the camera
 var zoom_time
 ```
 
+Time of zoom
+
 ### zoom\_transform
 
 ```gdscript

docs/api/ESCObjectManager.md

@@ -13,7 +13,7 @@ A manager for ESC objects
 ### RESERVED\_OBJECTS
 
 ```gdscript
-const RESERVED_OBJECTS: Array = ["_music","_sound","_speech"]
+const RESERVED_OBJECTS: Array = ["_music","_sound","_speech","_camera"]
 ```
 
 ## Property Descriptions