Rename ruff_python_semantic's Context struct to SemanticModel (#4565)

crates/ruff_python_ast/src/source_code/line_index.rs

@@ -1,13 +1,15 @@
-use crate::source_code::SourceLocation;
-use ruff_text_size::{TextLen, TextRange, TextSize};
-#[cfg(feature = "serde")]
-use serde::{Deserialize, Serialize};
 use std::fmt;
 use std::fmt::{Debug, Formatter};
 use std::num::NonZeroUsize;
 use std::ops::Deref;
 use std::sync::Arc;
 
+use ruff_text_size::{TextLen, TextRange, TextSize};
+#[cfg(feature = "serde")]
+use serde::{Deserialize, Serialize};
+
+use crate::source_code::SourceLocation;
+
 /// Index for fast [byte offset](TextSize) to [`SourceLocation`] conversions.
 ///
 /// Cloning a [`LineIndex`] is cheap because it only requires bumping a reference count.
@@ -312,9 +314,10 @@ const fn unwrap<T: Copy>(option: Option<T>) -> T {
 
 #[cfg(test)]
 mod tests {
+    use ruff_text_size::TextSize;
+
     use crate::source_code::line_index::LineIndex;
     use crate::source_code::{OneIndexed, SourceLocation};
-    use ruff_text_size::TextSize;
 
     #[test]
     fn ascii_index() {