separate thems into separate files

src/seqta/ui/themes/deleteTheme.ts

@@ -0,0 +1,23 @@
+import browser from 'webextension-polyfill';
+import localforage from 'localforage';
+import { CustomTheme } from '../../../interface/types/CustomThemes';
+import { removeTheme } from './removeTheme';
+
+
+export const deleteTheme = async (themeId: string) => {
+  try {
+    const theme = await localforage.getItem(themeId) as CustomTheme;
+    removeTheme(theme);
+
+    await localforage.removeItem(themeId);
+    const themeIds = await localforage.getItem('customThemes') as string[] | null;
+    if (themeIds) {
+      const updatedThemeIds = themeIds.filter((id) => id !== themeId);
+      await localforage.setItem('customThemes', updatedThemeIds);
+    }
+
+    await browser.storage.local.set({ selectedTheme: '' });
+  } catch (error) {
+    console.error('Error deleting theme:', error);
+  }
+};