feat(server): user and server license endpoints (#10682)

* feat: user license endpoints

* feat: server license endpoints

* chore: pr feedback

* chore: add more test cases

* chore: add prod license public keys

* chore: open-api generation

server/src/dtos/license.dto.ts

@@ -0,0 +1,16 @@
+import { IsNotEmpty, IsString, Matches } from 'class-validator';
+
+export class LicenseKeyDto {
+  @IsString()
+  @IsNotEmpty()
+  @Matches(/IM(SV|CL)(-[\dA-Za-z]{4}){8}/)
+  licenseKey!: string;
+
+  @IsString()
+  @IsNotEmpty()
+  activationKey!: string;
+}
+
+export class LicenseResponseDto extends LicenseKeyDto {
+  activatedAt!: Date;
+}