Expose backend API to IDE

[kazcw]

Pull Request Description

Move Backend and supporting APIs from dashboard to enso-common.

Closes #10400.

Important Notes

• The utility modules required by Backend have been moved to enso-common. Those defining general-purpose helpers for working with standard types are now in a submodule utilities/data to match the IDE organization; in the future we can merge them with the util/data gui2 subtree. Moved utilities are reexported from their dashboard locations, so that moved and not-yet-moved modules can be imported consistently.
• The text module has been moved to enso-common; the IDE doesn't have any localization mechanism yet, so we can share this one.

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,
  TypeScript,
  and
  Rust
  style guides. In case you are using a language not listed above, follow the Rust style guide.
• Unit tests have been written where possible.

[somebody1234]

approving dashboard changes, they seem to mostly (if not all) be just moving things around)