uv-install-wheel: Split installation logic and link logic (#11166)

uv-install-wheel had the logic for laying out the installation and for
linking a directory in the same module. We split them up to isolate each
module's logic and tighten the crate's interface to only expose top
level members.

No logic changes, only moving code around.

crates/uv-cli/src/lib.rs

@@ -2445,7 +2445,7 @@ pub struct VenvArgs {
     /// Defaults to `clone` (also known as Copy-on-Write) on macOS, and `hardlink` on Linux and
     /// Windows.
     #[arg(long, value_enum, env = EnvVars::UV_LINK_MODE)]
-    pub link_mode: Option<uv_install_wheel::linker::LinkMode>,
+    pub link_mode: Option<uv_install_wheel::LinkMode>,
 
     #[command(flatten)]
     pub refresh: RefreshArgs,
@@ -4170,7 +4170,7 @@ pub struct ToolUpgradeArgs {
         env = EnvVars::UV_LINK_MODE,
         help_heading = "Installer options"
     )]
-    pub link_mode: Option<uv_install_wheel::linker::LinkMode>,
+    pub link_mode: Option<uv_install_wheel::LinkMode>,
 
     /// Compile Python files to bytecode after installation.
     ///
@@ -4790,7 +4790,7 @@ pub struct InstallerArgs {
         env = EnvVars::UV_LINK_MODE,
         help_heading = "Installer options"
     )]
-    pub link_mode: Option<uv_install_wheel::linker::LinkMode>,
+    pub link_mode: Option<uv_install_wheel::LinkMode>,
 
     /// Compile Python files to bytecode after installation.
     ///
@@ -4986,7 +4986,7 @@ pub struct ResolverArgs {
         env = EnvVars::UV_LINK_MODE,
         help_heading = "Installer options"
     )]
-    pub link_mode: Option<uv_install_wheel::linker::LinkMode>,
+    pub link_mode: Option<uv_install_wheel::LinkMode>,
 
     /// Ignore the `tool.uv.sources` table when resolving dependencies. Used to lock against the
     /// standards-compliant, publishable package metadata, as opposed to using any workspace, Git,
@@ -5174,7 +5174,7 @@ pub struct ResolverInstallerArgs {
         env = EnvVars::UV_LINK_MODE,
         help_heading = "Installer options"
     )]
-    pub link_mode: Option<uv_install_wheel::linker::LinkMode>,
+    pub link_mode: Option<uv_install_wheel::LinkMode>,
 
     /// Compile Python files to bytecode after installation.
     ///