feat: move svelte interface to 'src/interface'

src/interface/types/SettingsProps.ts

@@ -0,0 +1,7 @@
+export interface SettingsList {
+  title: string;
+  id: number;
+  description: string;
+  Component: any; /* TODO: Give this a type */
+  props?: any;
+}

src/interface/types/Theme.ts

@@ -0,0 +1,7 @@
+export type Theme = {
+  name: string;
+  description: string;
+  coverImage: string;
+  marqueeImage: string;
+  id: string;
+};