Move GestureHandlerRootView to components directory (#2468)

## Description

Moves `GestureHandlerRootView` related TS files under the `components`
directory. They are, in fact, components.

## Test plan

Check if the Example and FabricExample apps work correctly

Author: j-piasecki

src/GestureHandlerRootView.android.tsx renamed to src/components/GestureHandlerRootView.android.tsx

@@ -1,9 +1,9 @@
 import * as React from 'react';
 import { PropsWithChildren } from 'react';
 import { ViewProps } from 'react-native';
-import { maybeInitializeFabric } from './init';
-import GestureHandlerRootViewContext from './GestureHandlerRootViewContext';
-import GestureHandlerRootViewNativeComponent from './specs/RNGestureHandlerRootViewNativeComponent';
+import { maybeInitializeFabric } from '../init';
+import GestureHandlerRootViewContext from '../GestureHandlerRootViewContext';
+import GestureHandlerRootViewNativeComponent from '../specs/RNGestureHandlerRootViewNativeComponent';
 
 export interface GestureHandlerRootViewProps
   extends PropsWithChildren<ViewProps> {}

src/GestureHandlerRootView.tsx renamed to src/components/GestureHandlerRootView.tsx

@@ -1,8 +1,8 @@
 import * as React from 'react';
 import { PropsWithChildren } from 'react';
 import { View, ViewProps } from 'react-native';
-import { maybeInitializeFabric } from './init';
-import GestureHandlerRootViewContext from './GestureHandlerRootViewContext';
+import { maybeInitializeFabric } from '../init';
+import GestureHandlerRootViewContext from '../GestureHandlerRootViewContext';
 
 export interface GestureHandlerRootViewProps
   extends PropsWithChildren<ViewProps> {}

src/GestureHandlerRootView.web.tsx renamed to src/components/GestureHandlerRootView.web.tsx

@@ -1,7 +1,7 @@
 import * as React from 'react';
 import { PropsWithChildren } from 'react';
 import { View, ViewProps } from 'react-native';
-import GestureHandlerRootViewContext from './GestureHandlerRootViewContext';
+import GestureHandlerRootViewContext from '../GestureHandlerRootViewContext';
 
 export interface GestureHandlerRootViewProps
   extends PropsWithChildren<ViewProps> {}

src/gestureHandlerRootHOC.tsx renamed to src/components/gestureHandlerRootHOC.tsx

@@ -2,8 +2,8 @@ import { initialize } from './init';
 
 export { Directions } from './Directions';
 export { State } from './State';
-export { default as gestureHandlerRootHOC } from './gestureHandlerRootHOC';
-export { default as GestureHandlerRootView } from './GestureHandlerRootView';
+export { default as gestureHandlerRootHOC } from './components/gestureHandlerRootHOC';
+export { default as GestureHandlerRootView } from './components/GestureHandlerRootView';
 export type {
   // event types
   GestureEvent,