feat: ported sensors screen

[Yugesh-Kumar-S]

Fixes #2788 (Still under progress )

Changes

• Ported sensors screen

Screenshots / Recordings

Checklist:

• No hard coding: I have used resources from strings.xml, dimens.xml and colors.xml without hard coding any value.
• No end of file edits: No modifications done at end of resource files strings.xml, dimens.xml or colors.xml.
• Code reformatting: I have reformatted code and fixed indentation in every file included in this pull request.
• No extra space: My code does not contain any extra lines or extra spaces than the ones that are necessary.

Summary by Sourcery

Port the sensors screen into the Flutter app UI and hook it into the navigation flow.

New Features:

• Port SensorsScreen with autoscan functionality, connection status display, and sensor selection list
• Add '/sensors' route in main.dart and integrate navigation to the sensors screen from the instruments screen

[sourcery-ai]

Reviewer's Guide

This PR introduces a fully-ported Sensors screen by adding a new StatefulWidget with autoscan logic and integrates it into the app’s navigation flow.

Sequence diagram for navigation to Sensors screen

sequenceDiagram
    actor User
    participant InstrumentsScreen
    participant Navigator
    participant SensorsScreen
    User->>InstrumentsScreen: Selects Sensors tab
    InstrumentsScreen->>Navigator: pushNamedAndRemoveUntil('/sensors')
    Navigator->>SensorsScreen: Build SensorsScreen

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File-Level Changes

Change	Details	Files
Implemented new Sensors screen with UI and autoscan functionality	Created SensorsScreen widget with CommonScaffold setup Built status display and ‘AUTOSCAN’ button tied to provider state Populated sensor list UI and tap handlers Implemented _performAutoscan to detect and list sensors	lib/view/sensors_screen.dart
Integrated Sensors screen into app navigation	Imported SensorsScreen in main.dart and added '/sensors' route Extended InstrumentsScreen switch-case to navigate to sensors path	lib/main.dart lib/view/instruments_screen.dart

Assessment against linked issues

Issue	Objective	Addressed	Explanation
#2788	Port the sensors screen to a new implementation.	✅
#2788	Implement individual screens for each sensor data.	❌	The PR ports the sensors screen but does not implement individual screens for each sensor data. The ported screen includes an autoscan feature to detect connected sensors, but tapping on a sensor does not navigate to an individual screen for that sensor's data.

Possibly linked issues

• Port sensors screen. #2788: The PR ports the sensors screen, matching the issue's request to implement the sensors screen UI and logic.

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[github-actions]

Build successful. APKs to test: https://github.com/fossasia/pslab-android/actions/runs/16326699000/artifacts/3547940450