feat: map custom app rating api

[AndrewAminInstabug]

Description of the change

Map the below API to Flutter

iOS: Instabug.willRedirectToAppStore()

Android: Instabug.willRedirectToAppStore();

This API is mainly used by the customer to mark that the user was redirected from the custom prompt to the App store or Play store so we can try to match the review to the relevant session replay.

Type of change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Related issues

Jira ID: MOB-14190

Checklists

Development

• Lint rules pass locally
• The code changed/added as part of this pull request has been covered with tests

Code review

• This pull request has a descriptive title and information useful to a reviewer
• Issue from task tracker has a link to this pull request

[mnoseir]

Coverage Report

Label	Coverage	Status
Dart	85.8%	✅

Generated by 🚫 dangerJS against a3416a7

[abdelhamid-f-nasser]

Great effort in mapping your first API 🎉 💪, please check the suggestions.

[InstabugCI]

Coverage Report

Label	Coverage	Status
Dart	85.9%	✅

Generated by 🚫 dangerJS against 5a190d5