move worktree- checkout functionality into its own crate

Author: Byron

Cargo.lock

@@ -235,6 +235,7 @@ members = [
     "gix-index",
     "gix-bitmap",
     "gix-worktree",
+    "gix-worktree-state",
     "gix-status",
     "gix-revision",
     "gix-packetline",

Cargo.toml

@@ -96,6 +96,7 @@ is usable to some extent.
   * [gix-archive](https://github.com/Byron/gitoxide/blob/main/crate-status.md#gix-archive)
   * [gix-submodule](https://github.com/Byron/gitoxide/blob/main/crate-status.md#gix-submodule)
   * [gix-status](https://github.com/Byron/gitoxide/blob/main/crate-status.md#gix-status)
+  * [gix-worktree-state](https://github.com/Byron/gitoxide/blob/main/crate-status.md#gix-worktree-state)
   * `gitoxide-core`
 * **very early**  _(possibly without any documentation and many rough edges)_
   * [gix-date](https://github.com/Byron/gitoxide/blob/main/crate-status.md#gix-date)

README.md

@@ -459,6 +459,27 @@ Make it the best-performing implementation and the most convenient one.
 * [ ] differences between tree and index to turn tree into index
 * [ ] untracked files
 * [ ] fast answer to 'is it dirty'.
+* 
+### gix-worktree-state
+* handle the working **tree/checkout**
+    - [x] checkout an index of files, executables and symlinks just as fast as git
+        - [x] forbid symlinks in directories
+        - [ ] handle submodules
+        - [ ] handle sparse directories
+        - [ ] handle sparse index
+        - [x] linear scaling with multi-threading up to IO saturation
+    - supported attributes to affect working tree and index contents
+        - [x] eol
+        - [x] working-tree-encoding
+        - …more
+    - **filtering**
+        - [x] `text`
+        - [x] `ident`
+        - [x] filter processes
+        - [x] single-invocation clean/smudge filters
+* access to per-path information, like `.gitignore` and `.gitattributes` in a manner well suited for efficient lookups
+    * [x] _exclude_ information
+    * [x] attributes
 
 ### gix-worktree
 * handle the working **tree/checkout**

crate-status.md

@@ -0,0 +1,44 @@
+[package]
+name = "gix-worktree-state"
+version = "0.1.0"
+repository = "https://github.com/Byron/gitoxide"
+license = "MIT OR Apache-2.0"
+description = "A crate of the gitoxide project implementing setting the worktree to a particular state"
+authors = ["Sebastian Thiel <[email protected]>"]
+edition = "2021"
+include = ["src/**/*", "LICENSE-*", "CHANGELOG.md"]
+rust-version = "1.65"
+
+[lib]
+doctest = false
+
+[[test]]
+name = "multi-threaded"
+path = "tests/state-multi-threaded.rs"
+required-features = ["internal-testing-gix-features-parallel"]
+
+[features]
+internal-testing-gix-features-parallel = ["gix-features/parallel"]
+
+[dependencies]
+gix-worktree = { version = "^0.24.0", path = "../gix-worktree" }
+gix-index = { version = "^0.22.0", path = "../gix-index" }
+gix-fs = { version = "^0.4.1", path = "../gix-fs" }
+gix-hash = { version = "^0.11.4", path = "../gix-hash" }
+gix-object = { version = "^0.34.0", path = "../gix-object" }
+gix-glob = { version = "^0.10.2", path = "../gix-glob" }
+gix-path = { version = "^0.8.4", path = "../gix-path" }
+gix-features = { version = "^0.32.1", path = "../gix-features" }
+gix-filter = { version = "^0.3.0", path = "../gix-filter" }
+
+io-close = "0.3.7"
+thiserror = "1.0.26"
+bstr = { version = "1.3.0", default-features = false }
+
+[dev-dependencies]
+gix-testtools = { path = "../tests/tools" }
+gix-odb = { path = "../gix-odb" }
+symlink = "0.1.0"
+once_cell = "1.18.0"
+
+walkdir = "2.3.2"

gix-worktree-state/Cargo.toml

@@ -0,0 +1 @@
+../LICENSE-APACHE

gix-worktree-state/LICENSE-APACHE

@@ -0,0 +1 @@
+../LICENSE-MIT