The cxterminfo crate has been used over popular alternatives
like `term` since it supports querying for extended capabilities
and also for it's small codebase size (which will make it easy
to inline it into helix in the future if required).
* reverse the dependency between helix-tui and helix-view by moving a fiew types to view
* fix tests
* clippy and format fixes
Co-authored-by: Keith Simmons <keithsim@microsoft.com>