[camera_platform_interface] Add setJpegImageQuality method

[Bolling88]

Platform interface changes for adding JPEG compression quality control to the camera plugin. This is the platform interface subset of #11155, split out per the federated plugin contribution process.

Fixes flutter/flutter#183229

Pre-Review Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
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• I read and followed the relevant style guides and ran the auto-formatter.
• I signed the CLA.
• The title of the PR starts with the name of the package surrounded by square brackets, e.g. [shared_preferences]
• I linked to at least one issue that this PR fixes in the description above.
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Footnotes

1. Regular contributors who have demonstrated familiarity with the repository guidelines only need to comment if the PR is not auto-exempted by repo tooling. ↩ ↩²

[gemini-code-assist]

Code Review

This pull request introduces the setJpegImageQuality method to the camera_platform_interface package, enabling control over JPEG compression quality. The update includes the interface definition, method channel implementation, and unit tests. Feedback suggests adding an assertion to validate the quality range and wrapping the method channel call in a try-catch block to throw a CameraException for consistent error handling.

[Bolling88]

@bparrishMines @hellohuanlin @LouiseHsu Could you review this? It's the platform interface subset of #11155, split out per the federated plugin process.

[LouiseHsu]

@Bolling88 I will take a look! 😸 But for future reference may I gently suggest requesting viewers through the side panel? It adds the PR to the review list, while manually tagging reviewers only generates an email that can easily get lost. :)

[Bolling88]

@Bolling88 I will take a look! 😸 But for future reference may I gently suggest requesting viewers through the side panel? It adds the PR to the review list, while manually tagging reviewers only generates an email that can easily get lost. :)

Thank you! But I think I lack the necessary permissions to add reviewers. At least that option does not exist for me when I try :(

Anyhow, we also need @bparrishMines approval before proceeding?