Add jquery-ui bazel build file

ts/jquery-ui.bzl

@@ -0,0 +1,29 @@
+load("//ts:copy.bzl", "copy_files")
+
+"Rule to copy jquery-ui subset from node_modules to vendor folder."
+
+_include = [
+    "jquery-ui.min.js",
+]
+
+_unwanted_prefix = "external/npm/node_modules/jquery-ui-dist/"
+
+def _copy_jquery_ui_impl(ctx):
+    wanted = []
+    for f in ctx.attr.jquery-ui.files.to_list():
+        path = f.path
+        want = True
+
+        for substr in _include:
+            if substr in path:
+                output = path.replace(_unwanted_prefix, "")
+                wanted.append((f, output))
+
+    return copy_files(ctx, wanted)
+
+copy_jquery_ui = rule(
+    implementation = _copy_jquery_ui_impl,
+    attrs = {
+        "jquery-ui": attr.label(default = "@npm//jquery-ui-dist:jquery-ui-dist__files"),
+    },
+)