fix: screen to choice the hardware

[ctrlVnt]

Fixes #3229

Changes

• Added a new screen to choice the hardware
• Edit AppBar to change hardware in instruments screen
• Edit main to go in hardware choice screen if it was not already selected, in instruments otherwise
• Added strings variables in English only
• If we want to add or change which intruments we want to show we just need to edit instruments_screen.dart file

Screenshots / Recordings

Screencast.From.2026-05-12.16-38-04.webm

Checklist:

• No hard coding: I have used values from constants.dart or localization files instead of hard-coded values.
• No end of file edits: No modifications done at end of resource files.
• Code reformatting: I have formatted the code using dart format or the IDE formatter.
• Code analysis: My code passes checks run in flutter analyze and tests run in flutter test.

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[rahul31124]

Hello @ctrlVnt , I feel this is not needed at the moment, or it may be a bit too early. We can discuss this properly first and then implement it.

[ctrlVnt]

I draft this PR for the future, too early

[bhavjsh]

@ctrlVnt Good idea for future but for now I agree with Rahul's comment