Introduce editable mode build-dir

Signed-off-by: Cristian Le <[email protected]>

Author: LecrisUT

docs/reference/configs.md

@@ -249,7 +249,7 @@ print(mk_skbuild_docs())
 
 ```{eval-rst}
 .. confval:: editable.mode
-  :type: ``"redirect" | "inplace"``
+  :type: ``"redirect" | "inplace" | "build-dir"``
   :default: "redirect"
 
   Select the editable mode to use. Can be "redirect" (default) or "inplace".

src/scikit_build_core/resources/scikit-build.schema.json

@@ -260,7 +260,8 @@
         "mode": {
           "enum": [
             "redirect",
-            "inplace"
+            "inplace",
+            "build-dir"
           ],
           "default": "redirect",
           "description": "Select the editable mode to use. Can be \"redirect\" (default) or \"inplace\"."

src/scikit_build_core/settings/skbuild_model.py

@@ -327,7 +327,7 @@ class BackportSettings:
 
 @dataclasses.dataclass
 class EditableSettings:
-    mode: Literal["redirect", "inplace"] = "redirect"
+    mode: Literal["redirect", "inplace", "build-dir"] = "redirect"
     """
     Select the editable mode to use. Can be "redirect" (default) or "inplace".
     """