Expose Unicode normalization methods on Texts

[GregoryTravis]

Pull Request Description

Exposes Text_Utils.normalize().

Checklist

Please ensure that the following checklist has been satisfied before submitting the PR:

• The documentation has been updated, if necessary.
• Screenshots/screencasts have been attached, if there are any visual changes. For interactive or animated visual changes, a screencast is preferred.
• All code follows the
  Scala,
  Java,
  and
  Rust
  style guides. In case you are using a language not listed above, follow the Rust style guide.
• All code has been tested:
  • Unit tests have been written where possible.
  • If GUI codebase was changed, the GUI was tested when built using ./run ide build.

[radeusgd]

I'd appreciate some explanation what case folding here involves, although maybe it is not needed since it's an advanced feature so we can expect the user to know/google this.

[GregoryTravis]

They're not easy to summarize briefly. Following the Java documentation, I just name them clearly and assume anyone using it will know what the mean.

[radeusgd]

Ok, fair enough

[radeusgd]

Looks good, just please clean the obsolete comment and verify that the comments on Normalization constructors (e.g. NFD) are displayed in Component Browser.

[jdunkerley]

A few nits.

[jdunkerley]

Just one line to remove!

[jdunkerley]

Need to remove this line.