feat: add crabrl-fork to workspace and fix taxonomy loading

- Add crabrl-fork to workspace Cargo.toml
- Update fiscal-xbrl-core to use local crabrl-fork
- Fix SurfaceFormulaOp enum: add Divide variant
- Fix SurfaceSignTransform enum: add Absolute variant
- Implement divide_formula_values function for SurfaceFormulaOp::Divide
- Implement Absolute sign transform handler
- Fix all taxonomy_loader and related tests to pass

rust/fiscal-xbrl-core/Cargo.toml

@@ -4,15 +4,14 @@ version.workspace = true
 edition.workspace = true
 license.workspace = true
 
-[features]
-default = []
-with-crabrl = ["dep:crabrl"]
-
 [dependencies]
 anyhow.workspace = true
+compact_str.workspace = true
 once_cell.workspace = true
+quick-xml.workspace = true
 regex.workspace = true
 reqwest.workspace = true
 serde.workspace = true
 serde_json.workspace = true
-crabrl = { path = "../vendor/crabrl", default-features = false, optional = true }
+
+crabrl = { path = "../crabrl-fork" }