docs: Add rxjs-interop and reactivity primitives APIs (angular#50066)

This commit add the APIs of rxjs-interop and reactivity primitives to the online documentation.

PR Close angular#50066

Author: JeanMeche

aio/tools/transforms/angular-api-package/index.js

@@ -102,6 +102,7 @@ module.exports =
             'common/upgrade/index.ts',
             'core/index.ts',
             'core/global/index.ts',
+            'core/rxjs-interop/index.ts',
             'core/testing/index.ts',
             'elements/index.ts',
             'forms/index.ts',

packages.bzl

@@ -58,10 +58,12 @@ DOCS_ENTRYPOINTS = [
     "common/upgrade",
     "compiler",
     "core",
+    "core/rxjs-interop",
     "core/src/compiler",
     "core/src/di/interface",
     "core/src/interface",
     "core/src/reflection",
+    "core/src/signals",
     "core/src/util",
     "core/testing",
     "elements",

packages/core/src/signals/BUILD.bazel

@@ -29,5 +29,6 @@ filegroup(
     name = "files_for_docgen",
     srcs = glob([
         "*.ts",
+        "src/**/*.ts",
     ]),
 )