Implement StmtPass (#4959)

This implements StmtPass as `pass`.

The snapshot diff is small because pass mainly occurs in bodies and function (#4951) and if/for bodies.

crates/ruff_python_formatter/src/snapshots/ruff_python_formatter__tests__ruff_test__statement__while_py.snap

@@ -41,22 +41,22 @@ while (
 ## Output
 ```py
 while 34: # trailing test comment
- NOT_YET_IMPLEMENTED_StmtPass # trailing last statement comment
+ pass # trailing last statement comment
 
  # trailing while body comment
 
 # leading else comment
 
 else: # trailing else comment
- NOT_YET_IMPLEMENTED_StmtPass
+ pass
 
  # trailing else body comment
 
 
 while (
  aVeryLongConditionThatSpillsOverToTheNextLineBecauseItIsExtremelyLongAndGoesOnAndOnAndOnAndOnAndOnAndOnAndOnAndOnAndOn
 ): # trailing comment
- NOT_YET_IMPLEMENTED_StmtPass
+ pass
 
 else:
  ...

crates/ruff_python_formatter/src/statement/stmt_pass.rs

@@ -1,12 +1,13 @@
-use crate::{not_yet_implemented, FormatNodeRule, PyFormatter};
-use ruff_formatter::{write, Buffer, FormatResult};
+use crate::{FormatNodeRule, PyFormatter};
+use ruff_formatter::prelude::text;
+use ruff_formatter::{Format, FormatResult};
 use rustpython_parser::ast::StmtPass;
 
 #[derive(Default)]
 pub struct FormatStmtPass;
 
 impl FormatNodeRule<StmtPass> for FormatStmtPass {
- fn fmt_fields(&self, item: &StmtPass, f: &mut PyFormatter) -> FormatResult<()> {
- write!(f, [not_yet_implemented(item)])
+ fn fmt_fields(&self, _item: &StmtPass, f: &mut PyFormatter) -> FormatResult<()> {
+ text("pass").fmt(f)
  }
 }