feat: add license integration (#2346)

Changes:
- Adds integration for the license server.
- Prevent adding flags that the instance is not allowed to add

packages/tsconfig/process-env.d.ts

@@ -2,6 +2,7 @@ declare namespace NodeJS {
   export interface ProcessEnv {
     PORT?: string;
     NEXT_PUBLIC_WEBAPP_URL?: string;
+    NEXT_PRIVATE_DOCUMENSO_LICENSE_KEY?: string;
 
     NEXT_PRIVATE_GOOGLE_CLIENT_ID?: string;
     NEXT_PRIVATE_GOOGLE_CLIENT_SECRET?: string;