numerous refactoring

- Split parser core and compiler core. Fix #14
- AST int type to `u32`
- Updated asdl_rs.py and update_asdl.sh fix #6
- Use `ruff_python_ast::SourceLocation` for Python source location. Deleted our own Location.
- Renamed ast::Located to ast::Attributed to distinguish terms for TextSize and SourceLocation
- `ast::<Node>`s for TextSize located ast. `ast::located::<Node>` for Python source located ast.
- And also strictly renaming `located` to refer only python location related interfaces.
- `SourceLocator` to convert locations.
- New `source-code` features of to disable python locations when unnecessary.
- Also including fully merging https://github.com/astral-sh/RustPython/pull/4 closes #9

parser/src/lexer.rs

@@ -28,11 +28,11 @@
 //!
 //! [Lexical analysis]: https://docs.python.org/3/reference/lexical_analysis.html
 use crate::{
-    mode::Mode,
     soft_keywords::SoftKeywordTransformer,
     string::FStringErrorType,
     text_size::{TextLen, TextRange, TextSize},
     token::{StringKind, Tok},
+    Mode,
 };
 use log::trace;
 use num_bigint::BigInt;