supports user-defined application_id/package_name

[Ran-Mori]

TLDR

• supports users to customize package names during compilation.

Background:

• Chinese mainland mobile phone manufacturers are increasingly tightening restrictions on the installation of proxy software in their ROMs, often blocking the installation of certain software based on package name. Therefore, users are requesting changes to their package names.

Implementation:

• The configuration can be customized by the user in the local.properties file. If no customization is made, the default package name "com.github.metacubex.clash" will be used.

Test:

• when not config in local.properties file.

• when config in local.properties file.