Move to NextJS + other changes

src/types/VersionsConfig.ts

@@ -1,11 +0,0 @@
-import { DownloadedVersion } from './DownloadedVersion'
-
-export class VersionsConfig {
-  constructor (public version: string, public list: DownloadedVersion[] = []) {}
-
-  static import (data: any) {
-    const cfg = new VersionsConfig(data.version)
-    Object.assign(cfg.list, data.list)
-    return cfg
-  }
-}