Adding ColorFiltered "Widget of the week" video to docs.

[panmari]

Description

Adding ColorFiltered "Widget of the week" video to docs. Most other widgets have it already as part of their docs.

Related Issues

Tests

I added the following tests:

Checklist

• I read the [Contributor Guide] and followed the process outlined there for submitting PRs.
• I signed the [CLA].
• I read and followed the [Flutter Style Guide], including [Features we expect every widget to implement].
• I read the [Tree Hygiene] wiki page, which explains my responsibilities.
• I updated/added relevant documentation (doc comments with ///).
• All existing and new tests are passing.
• The analyzer (flutter analyze --flutter-repo) does not report any problems on my PR.
• I am willing to follow-up on review comments in a timely manner.

Breaking Change

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• No, no existing tests failed, so this is not a breaking change.
• Yes, this is a breaking change. If not, delete the remainder of this section.
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  • I got input from the developer relations team, specifically from: Replace with the names of who gave advice
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[fluttergithubbot]

It looks like this pull request may not have tests. Please make sure to add tests before merging. If you need an exemption to this rule, contact Hixie on the #hackers channel in Chat.

Reviewers: Read the Tree Hygiene page and make sure this patch meets those guidelines before LGTMing.

[goderbauer]

LGTM

[goderbauer]

For some reason, the bots timed out. Restarting...

[fluttergithubbot]

This pull request is not suitable for automatic merging in its current state.

• The status or check suite docs-linux has failed. Please fix the issues identified (or deflake) before re-applying this label.
• The status or check suite framework_tests-widgets-windows has failed. Please fix the issues identified (or deflake) before re-applying this label.
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[goderbauer]

@panmari You may have to rebase this onto the latest master to get the checks to pass.

[panmari]

Thanks for looking into my patch! I rebased on master and force pushed to my PR.