build: switch from yarn to npm to manage js dependencies and move js contents to root

yarn v1 is being deprecated and starts to have some issues

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

src/types/application.model.ts

@@ -0,0 +1,15 @@
+export interface IApplication {
+  name: string;
+  clientId: string;
+  clientSecret?: string;
+  redirectUris?: string;
+  scope: string | null;
+  website: string | null;
+}
+
+export interface IApplicationToken {
+  id: string;
+  application: IApplication;
+  lastUsedAt: string;
+  insertedAt: string;
+}