Move flow-typed definitions to repo root (#37636)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/37636

Moves `flow-typed/` directory from `packages/react-native/flow-typed/` to the repo root.

- This is a more suitable location for `flow-typed` definitions for 3P dependencies to be used across React Native packages.
- **Breaking**: We no longer publish these 3P libdefs as part of the `react-native` package (assuming that external use of React Native with Flow is extremely rare, and that these projects can manage their own package libdefs).

Changelog:
[General][Breaking] Remove included `flow-typed/` directory from the `react-native` package

- **Upgrade instructions**: Projects using Flow should install or replicate third party `flow-typed` definitions for React Native dependencies — see https://github.com/facebook/react-native/tree/main/flow-typed and [#37636](https://github.com/facebook/react-native/pull/37636).

Reviewed By: hoxyq

Differential Revision: D46313482

fbshipit-source-id: 3d97d5408e44dd43132664c4933f3ff1075f90a1

.eslintrc.js

@@ -34,7 +34,14 @@ module.exports = {
         'no-undef': 0,
       },
     },
-
+    {
+      files: ['flow-typed/**/*.js'],
+      rules: {
+        'lint/valid-flow-typed-signature': 2,
+        'no-unused-vars': 0,
+        quotes: 0,
+      },
+    },
     {
       files: ['packages/react-native/Libraries/**/*.js'],
       rules: {
@@ -46,14 +53,6 @@ module.exports = {
         'lint/sort-imports': 1,
       },
     },
-    {
-      files: ['packages/react-native/flow-typed/**/*.js'],
-      rules: {
-        'lint/valid-flow-typed-signature': 2,
-        'no-unused-vars': 0,
-        quotes: 0,
-      },
-    },
     {
       files: [
         '**/__fixtures__/**/*.js',

.flowconfig

@@ -25,9 +25,9 @@
 .*/node_modules/.*
 
 [libs]
+flow-typed/
 packages/react-native/interface.js
 packages/react-native/flow/
-packages/react-native/flow-typed/
 
 [options]
 enums=true

.flowconfig.android

@@ -25,9 +25,9 @@
 .*/node_modules/.*
 
 [libs]
+flow-typed/
 packages/react-native/interface.js
 packages/react-native/flow/
-packages/react-native/flow-typed/
 
 [options]
 enums=true

packages/react-native/package.json

@@ -34,7 +34,6 @@
     "build.gradle.kts",
     "cli.js",
     "flow",
-    "flow-typed",
     "gradle.properties",
     "index.js",
     "interface.js",