[camera] Expand CameraImage DTO with properties for lens aperture, exposure time and ISO.

[BeMacized]

This PR adds additional properties to the CameraImage DTO:

• lensAperture
• sensorExposureTime
• sensorSensitivity

Relevant issue:

• [camera] ISO, Shutter Speed, Aperture flutter#73250

This PR adds no breaking changes.

As this PR depends on changes made by the Android refactor (#4059), this PR will remain in draft state until those changes have been merged.

Pre-launch Checklist

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• I listed at least one issue that this PR fixes in the description above.
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• I updated/added relevant documentation (doc comments with ///).
• I added new tests to check the change I am making or feature I am adding, or Hixie said the PR is test exempt.
• All existing and new tests are passing.

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[BeMacized]

@googlebot I consent.

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[BeMacized]

Closing in favour of #4256.

[AnimeshHestabit]

Hello, I am using the camera plugin: ^0.9.4+14 for camera in flutter, but I want to explore more advance features of camera for IOS and android both. So please help me out for this.I am not able to use the [camera] ISO, Shutter Speed etc like features.