Move Ranged into ruff_text_size (#6919)

## Summary

The motivation here is that this enables us to implement `Ranged` in
crates that don't depend on `ruff_python_ast`.

Largely a mechanical refactor with a lot of regex, Clippy help, and
manual fixups.

## Test Plan

`cargo test`

crates/ruff_python_formatter/src/other/identifier.rs

@@ -1,7 +1,8 @@
-use crate::prelude::*;
-
 use ruff_formatter::{FormatOwnedWithRule, FormatRefWithRule};
-use ruff_python_ast::{Identifier, Ranged};
+use ruff_python_ast::Identifier;
+use ruff_text_size::Ranged;
+
+use crate::prelude::*;
 
 pub struct FormatIdentifier;