Handle the unsigned shift, triple-shift, >>> operator in analyzer

[srawlins]

This is the analyzer implementation subtask under dart-lang/language#478. Broad feature here: dart-lang/language#120.

Here is the accepted feature: https://github.com/dart-lang/language/tree/master/accepted/future-releases/small-features-21Q1

• Implementation in Analyzer (Handle the unsigned shift, triple-shift, >>> operator in analyzer #44908)
  • analysis_server core features (Go To Definition (does not work for operators broadly; There is no way to navigate to operator functions #39911), Find References, Sort Declarations)
  • analyzer: include triple shift test cases in existing diagnostic tests
  • linter: consider existing lints; add test cases regarding triple shift

[srawlins]

After reviewing the existing lint rules, I see none which need new test cases or implementation for triple-shift.

[franklinyow]

Any update here?

[srawlins]

I'll call this done. I don't think there is any analysis_server work to be done.