feat: improve share security

backend/src/share/dto/createShare.dto.ts

@@ -1,5 +1,5 @@
 import { Type } from "class-transformer";
-import { IsString, Matches, ValidateNested } from "class-validator";
+import { IsString, Length, Matches, ValidateNested } from "class-validator";
 import { ShareSecurityDTO } from "./shareSecurity.dto";
 
 export class CreateShareDTO {
@@ -7,6 +7,7 @@ export class CreateShareDTO {
   @Matches("^[a-zA-Z0-9_-]*$", undefined, {
     message: "ID only can contain letters, numbers, underscores and hyphens",
   })
+  @Length(3, 50)
   id: string;
 
   @IsString()