SMB device discovery strategy using mDNS/NsdManager

[TranceLove]

Description

NsdManager implementation of SmbDeviceScannerObservable.DiscoverDeviceStrategy, to enable discover Samba servers advertised on the network using mDNS.

Issue tracker

Fixes #4488

Automatic tests

• Added test cases

Manual tests

• Done

• Device: Fairphone 5

• OS: LineageOS 23.0 (Android 16)
  With proper configuration of avahi-daemon and samba, Amaze is able to discover Samba servers on the same network.

Build tasks success

Successfully running following tasks on local:

• ./gradlew assembledebug
• ./gradlew spotlessCheck

[Copilot]

Pull request overview

This PR implements SMB device discovery using Android's NsdManager API for mDNS/Bonjour/ZeroConf service discovery. The implementation follows the existing strategy pattern, adding NsdManagerDiscoverDeviceStrategy alongside the existing WSDD and same-subnet discovery strategies.

• Adds a new discovery strategy using NsdManager for mDNS-based SMB server discovery
• Refactors the Observable to properly handle individual emitter disposal and error propagation
• Adds required Android permissions for multicast and nearby Wi-Fi device access

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
NsdManagerDiscoverDeviceStrategy.kt	New strategy implementation using NsdManager to discover SMB services via mDNS, with support for both pre-API 34 (using deprecated resolveService) and API 34+ (using hostAddresses)
SmbDeviceScannerObservable.kt	Modified to use Observable.create instead of fromCallable, properly handle emitter disposal, add explicit onSubscribe call, and propagate errors to observers
NsdManagerDiscoverDeviceStrategyTest.kt	Comprehensive unit tests for the new NsdManager strategy covering service discovery, resolution, error handling, and resource cleanup
SmbDeviceScannerObservableTest.kt	Unit tests for the Observable implementation verifying strategy coordination, device emission, disposal, and error propagation
SmbSearchDialog.kt	Minor refactoring: rename mInflater to inflater, replace Color.parseColor with toColorInt extension
AndroidManifest.xml	Adds INTERNET (duplicate), CHANGE_WIFI_MULTICAST_STATE, and NEARBY_WIFI_DEVICES permissions for mDNS functionality

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