[image_picker] Add videoQuality parameter - platform implementations

[Koichi5]

Description

Implements the videoQuality parameter across all platform implementations
(Android, iOS, Web, Linux, macOS, Windows).

Part 2 of 3 for flutter/flutter#179940
Depends on PR 1: #11144 (platform_interface)

Related PRs

• PR 1 (platform_interface): [image_picker] Add videoQuality parameter - platform_interface #11144
• PR 3 (app-facing package): [image_picker] Add videoQuality parameter to pickVideo #11146

Pre-Review Checklist

• I read the [Contributor Guide] and followed the process outlined there for submitting PRs.
• I read the [Tree Hygiene] page, which explains my responsibilities.
• 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.
• I followed [the version and CHANGELOG instructions], using [semantic versioning] and the [repository CHANGELOG style], or I have commented below to indicate which documented exception this PR falls under[^1].
• I updated/added any relevant documentation (doc comments with ///).
• I added new tests to check the change I am making, or I have commented below to indicate which [test exemption] this PR falls under[^1].
• All existing and new tests are passing.

[google-cla]

Thanks for your pull request! It looks like this may be your first contribution to a Google open source project. Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

View this failed invocation of the CLA check for more information.

For the most up to date status, view the checks section at the bottom of the pull request.