Update Project Name

[AgmoHONGLOK]

Is your feature request related to a problem? Please describe.
The project name dumbdumb_flutter shall be update to match with company product naming convention.

Describe the solution you'd like
Change project name and related as following:
Project Name: Agmo_Flutter_Starter_Kits
Project BundleId: com.agmostudio.mobile.flutterstarterkit
Project AppId: com.agmostudio.mobile.flutterstarterkit
Directories: com/agmostudio/mobile/flutterstarterkit

Describe alternatives you've considered
N/A

Additional context
N/A