refactor: improves Performance & Code Readability

- Replaces useEffet with useMemo & useLayoutEffect where necessary.
- Converts some useEffects to separate hooks.
- Moves the functions defined within components to utils.
- Splits the Keywords renderPosition function to its own component.

components/keywords/KeywordPosition.tsx

@@ -0,0 +1,19 @@
+import Icon from '../common/Icon';
+
+type KeywordPositionProps = {
+   position: number,
+   updating?: boolean,
+   type?: string,
+}
+
+const KeywordPosition = ({ position = 0, type = '', updating = false }:KeywordPositionProps) => {
+   if (!updating && position === 0) {
+      return <span className='text-gray-400' title='Not in Top 100'>{'>100'}</span>;
+   }
+   if (updating && type !== 'sc') {
+      return <span title='Updating Keyword Position'><Icon type="loading" /></span>;
+   }
+   return <>{Math.round(position)}</>;
+};
+
+export default KeywordPosition;