chore: bump yarn to 4.5.0 via corepack

I considered moving to pnpm but nix support looks not as mature.
for example this is pre-alpha:
https://github.com/nix-community/pnpm2nix
but this looks ok.
https://github.com/nzbr/pnpm2nix-nzbr

.gitignore

@@ -13,3 +13,10 @@ vite.config.ts.timestamp-*
 storybook-static
 yarn-error.log
 tmp
+.pnp.*
+.yarn/*
+!.yarn/patches
+!.yarn/plugins
+!.yarn/releases
+!.yarn/sdks
+!.yarn/versions

.yarnrc.yml

@@ -0,0 +1 @@
+nodeLinker: node-modules

flake.nix

@@ -49,10 +49,11 @@
           buildInputs = [
             pkgs.gitlint
             pkgs.nodejs
-            pkgs.yarn
+            pkgs.corepack
           ];
 
           shellHook = ''
+            yarn set version 4.5.0
             # auto-install git hooks
             dot_git="$(git rev-parse --git-common-dir)"
             if [[ ! -d "$dot_git/hooks" ]]; then mkdir "$dot_git/hooks"; fi

package.json

@@ -60,5 +60,6 @@
     "parse-diff": "^0.11.1",
     "ramda": "^0.29.1",
     "svelte-markdown": "^0.4.1"
-  }
+  },
+  "packageManager": "yarn@4.5.0"
 }