rust-analyzer: move to by-name

pkgs/top-level/all-packages.nix

···
   opensyclWithRocm = opensycl.override { rocmSupport = true; };
 
   rustfmt = rustPackages.rustfmt;
-  rust-analyzer = callPackage ../by-name/ru/rust-analyzer-unwrapped/wrapper.nix { };
   rust-bindgen-unwrapped = callPackage ../development/tools/rust/bindgen/unwrapped.nix { };
   rust-bindgen = callPackage ../development/tools/rust/bindgen { };
   rust-cbindgen = callPackage ../development/tools/rust/cbindgen {