Vendor yarn executable (#132)

* chore: vendor yarn version

* chore: change git ignore for yarn files

* chore: "add-target" make target

Non-rustup users have to run this.

* ci: prettier should ignore .yarn

Author: Dylan C. Kendal

.gitattributes

@@ -1 +1,3 @@
-*.json  linguist-language=JSON-with-Comments
+*.json  linguist-language=JSON-with-Comments
+.yarn/releases/** binary
+.yarn/plugins/** binary

.gitignore

@@ -24,4 +24,8 @@ src/napi/package-*
 target
 *.node
 todo-express/
-qwik-app/
+qwik-app/
+
+# Yarn
+.yarn/*
+!.yarn/releases

.prettierignore

@@ -4,6 +4,7 @@
 *.
 .vscode/settings.json
 .history
+.yarn
 bazel-*
 bazel-bin
 bazel-out
@@ -27,4 +28,4 @@ build
 .rollup.cache
 build
 node_modules
-tsconfig.tsbuildinfo
+tsconfig.tsbuildinfo