Implement template strings (#17851)

This PR implements template strings (t-strings) in the parser and
formatter for Ruff.

Minimal changes necessary to compile were made in other parts of the code (e.g. ty, the linter, etc.). These will be covered properly in follow-up PRs.

crates/ruff_python_formatter/src/pattern/mod.rs

@@ -293,6 +293,7 @@ impl<'a> CanOmitOptionalParenthesesVisitor<'a> {
                 // F-strings are allowed according to python's grammar but fail with a syntax error at runtime.
                 // That's why we need to support them for formatting.
                 Expr::FString(_)  |
+                Expr::TString(_)|
                 Expr::NumberLiteral(_) | Expr::Attribute(_) | Expr::UnaryOp(_) => {
                     // require no state update other than visit_pattern does.
                 }
@@ -306,7 +307,7 @@ impl<'a> CanOmitOptionalParenthesesVisitor<'a> {
                 _ => {
                     debug_assert!(
                         false,
-                        "Unsupported expression in pattern mach value: {:?}",
+                        "Unsupported expression in pattern match value: {:?}",
                         value.value
                     );
                 }