build: Add entry point for Ivy language service (#36864)

This commit adds a new entry point for the Ivy version of language
service. The entry point is just a shell for now, implementation will be
added in subsequent PRs.

The Ivy version of language service could be loaded from the NPM package
via `require(@angular/language-service/bundles/ivy.umd.js)`

PR Close #36864

packages/language-service/bundles/BUILD.bazel

@@ -18,6 +18,21 @@ ls_rollup_bundle(
     ],
 )
 
+ls_rollup_bundle(
+    name = "ivy",
+    entry_point = "//packages/language-service/ivy:ts_plugin.ts",
+    globals = {
+        "fs": "fs",
+        "path": "path",
+        "typescript/lib/tsserverlibrary": "ts",
+    },
+    license_banner = ":banner",
+    visibility = ["//packages/language-service:__pkg__"],
+    deps = [
+        "//packages/language-service/ivy",
+    ],
+)
+
 genrule(
     name = "banner",
     srcs = ["banner.js"],