Support configure() call on services and expose BluetoothScanner via APISupport SPI

[Supereg]

Support configure() call on services and expose BluetoothScanner via APISupport SPI

♻️ Current situation & Problem

Currently it is not possible for a BluetoothService implementation to provide steps for configuration (e.g., set up onChange handlers). Only the BluetoothDevice has a configure() method that can be used for these use cases. This PR adds a new configure() method to BluetoothServices such that their logic can be self-contained.
Additionally, the scanNearbyDevices has really useful logic for Bluetooth Scanners that was previously (< 2.0) accessible in the public interface, but is exclusively accessible to the Bluetooth module and the BluetoothManager. This PR exposes these interfaces as the APISupport SPI. This allows other library developers to reuse the scanNearbyDevices modifier for their custom Bluetooth scanner implementations (e.g., Muse SDK in NAMS).

⚙️ Release Notes

• Added optional configure() method to the BluetoothService protocol to allow for self-container bluetooth service implementations.
• Allow to implement your own BluetoothScanner.

📚 Documentation

Added documentation for newly exposed symbols.

✅ Testing

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📝 Code of Conduct & Contributing Guidelines

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• I agree to follow the Code of Conduct and Contributing Guidelines.

[codecov]

Codecov Report

Attention: Patch coverage is 84.61538% with 2 lines in your changes missing coverage. Please review.

Project coverage is 80.98%. Comparing base (8ee8ba9) to head (a3b8174).

Files with missing lines	Patch %	Lines
...uetooth/CoreBluetooth/Model/DiscoverySession.swift	50.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #50      +/-   ##
==========================================
+ Coverage   80.92%   80.98%   +0.06%     
==========================================
  Files         108      109       +1     
  Lines        5958     5961       +3     
==========================================
+ Hits         4821     4827       +6     
+ Misses       1137     1134       -3     

Files with missing lines	Coverage Δ
Sources/SpeziBluetooth/Bluetooth.swift	88.51% <100.00%> (-0.03%)	⬇️
...peziBluetooth/CoreBluetooth/BluetoothManager.swift	82.54% <100.00%> (+0.20%)	⬆️
...ources/SpeziBluetooth/Model/BluetoothService.swift	100.00% <100.00%> (ø)
...tooth/Model/SemanticModel/SetupDeviceVisitor.swift	86.21% <100.00%> (+0.76%)	⬆️
...Bluetooth/Modifier/ScanNearbyDevicesModifier.swift	71.12% <100.00%> (ø)
...uetooth/CoreBluetooth/Model/DiscoverySession.swift	88.79% <50.00%> (ø)

... and 1 file with indirect coverage changes

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