Multi-language support implementation for flood-mobile app

[amitamrutiya]

This pull request (multi-lang-support) includes several commits that introduce multiple language support to the app.

Describe the changes you have made in this PR -

• Implements the language bloc and adds necessary dependencies to handle language-related functionality effectively.
• Adds a user interface section within the settings screen.
• Ensures all the required .arb files for language support are implemented.
• Modifies the app to use text values from .arb files, enabling easier localization.
• Implements the automatic language selection feature as the default behavior in the app.
• Adds unit and widget testing specifically for the new features introduced.
• Fixes some text overflow issues.

I implemented all of the following languages

• English
• हिन्दी
• Čeština
• Deutsch
• Español
• Français
• italiano
• Magyar
• Nederlands
• norsk
• Polskie
• português
• русский язык
• Romanian
• suomi
• svenska
• українська мова
• 한국어
• 日本語
• 中文(繁體)
• اَلْعَرَبِيَّةُ

Screenshots of the changes (If any) -