chore: Move everything into package/ (#1745)

* Move everything into package

* Remove .DS_Store

* Move scripts and eslintrc to package

* Create CODE_OF_CONDUCT.md

* fix some links

* Update all links (I think)

* Update generated docs

* Update notice-yarn-changes.yml

* Update validate-android.yml

* Update validate-cpp.yml

* Delete notice-yarn-changes.yml

* Update validate-cpp.yml

* Update validate-cpp.yml

* Update validate-js.yml

* Update validate-cpp.yml

* Update validate-cpp.yml

* wrong c++ style

* Revert "wrong c++ style"

This reverts commit 55a3575589c6f13f8b05134d83384f55e0601ab2.

package/example/src/hooks/useIsForeground.ts

@@ -0,0 +1,17 @@
+import { useState } from 'react';
+import { useEffect } from 'react';
+import { AppState, AppStateStatus } from 'react-native';
+
+export const useIsForeground = (): boolean => {
+  const [isForeground, setIsForeground] = useState(true);
+
+  useEffect(() => {
+    const onChange = (state: AppStateStatus): void => {
+      setIsForeground(state === 'active');
+    };
+    const listener = AppState.addEventListener('change', onChange);
+    return () => listener.remove();
+  }, [setIsForeground]);
+
+  return isForeground;
+};