Update various types to use their own definitions

This commit refactors several modules to use the defined types from
`ast::types` and `ast::nodes` directly, rather than using fully
qualified paths. This improves code readability and reduces redundancy.

Specifically, the following changes were made:

- In `analyzer.rs`, `crate::ast::types::Identity` and
  `crate::ast::types::Purity` are now used directly.
- In `binder.rs`, `crate::ast::types::NodeIdentity`,
  `crate::ast::types::SourceLocation`,
  `crate::ast::types::RecordLayout`, and `crate::ast::types::Value` are
  now used directly.
- In `macros.rs`, types like `Address`, `VirtualId`, `NodeIdentity`,
  `SourceLocation`, `StaticType`, and `Purity` are now used directly.
- In `optimizer/engine.rs`, `Address<VirtualId>` is now used directly.
- In `type_checker.rs`, `BoundPhase`, `Signature`, `Keyword`, and
  `RecordLayout` are now used directly.
- In `environment.rs`, `CompilerScope`, `LocalInfo`, `CapturePass`,
  `AnalyzedPhase`, `NativeFunction`, and `Closure` are now used
  directly.
- In `nodes.rs`, `RecordLayout`, `Keyword`, `Purity`, and `StaticType`
  are now used directly.
- In `parser.rs`, `SourceLocation` and `NodeIdentity` are now used
  directly.
- In `rtl/math.rs`, `NativeFunction`, `Purity`, `Signature`,
  `StaticType`, `Value`, `RefCell`, and `Rc` are now used directly.
- In `rtl/streams.rs`, `ScalarValue`, `SeriesMember`, `Object`,
  `PipeFn`, `Value`, `VM`, `RingBuffer`, `RecordSeries`, `SeriesView`,
  `build_map_stream`, and `build_pipeline_node` are now used directly.
- In `rtl/type_registry.rs`, `RecordLayout`, `Keyword`, `Purity`,
  `Signature`, `StaticType`, and `Value` are now used directly.
- In `vm.rs`, `RecordSeries`, `SeriesView`, `build_map_stream`,
  `build_pipeline_node`, `StreamNode`, `Object`, and `PipeFn` are now
  used directly.
- In `utils/tester.rs`, `TypedNode` is now used directly.

src/ast/compiler/optimizer/engine.rs

@@ -1,6 +1,6 @@
 use crate::ast::nodes::{
     Address, AnalyzedNode, AssignBinding, GlobalAnalyzedRegistry,
-    IdentifierBinding, LambdaBinding, Node, NodeKind, UpvalueIdx,
+    IdentifierBinding, LambdaBinding, Node, NodeKind, UpvalueIdx, VirtualId,
 };
 use crate::ast::types::{Purity, Value};
 use crate::ast::vm::Closure;
@@ -756,7 +756,7 @@ impl Optimizer {
     }
 
     /// Extracts the address from a Def pattern node (when it's a simple Identifier with Declaration binding).
-    fn extract_def_addr(pattern: &AnalyzedNode) -> Option<Address<crate::ast::nodes::VirtualId>> {
+    fn extract_def_addr(pattern: &AnalyzedNode) -> Option<Address<VirtualId>> {
         if let NodeKind::Identifier {
             binding: IdentifierBinding::Declaration { addr, .. },
             ..