feat: Automatic package name detection

[yardexx]

Description

Most of the time, expected name of package (Android) / app bundle (iOS) already matches the already inserted one in build.gradle/Runner.xcscheme file. It can be beneficial to read get this information automatically rather than asking for it.

Requirements

• Research
• Gradle parser
• XML parser

Additional Context

This request could be followed by automatically getting signing hash (Android)/ app team id (iOS) feature.