Add legal information (#61)

Co-authored-by: Dessalines <dessalines@users.noreply.github.com>

src/interfaces/api/site.ts

@@ -108,6 +108,7 @@ export interface EditSite {
   application_question?: string;
   private_instance?: boolean;
   default_theme?: string;
+  legal_information?: string;
   default_post_listing_type?: string;
   auth: string;
 }

src/interfaces/source.ts

@@ -61,6 +61,7 @@ export interface Site {
   last_refreshed_at: string;
   inbox_url: string;
   public_key: string;
+  legal_information?: string;
 }
 
 export interface PrivateMessage {