fix: rename event module into analytics and clean (#482)

server/src/core/analytics/dto/create-analytics.input.ts

@@ -0,0 +1,15 @@
+import { ArgsType, Field } from '@nestjs/graphql';
+import GraphQLJSON from 'graphql-type-json';
+import { IsNotEmpty, IsString, IsObject } from 'class-validator';
+
+@ArgsType()
+export class CreateAnalyticsInput {
+  @Field({ description: 'Type of the event' })
+  @IsNotEmpty()
+  @IsString()
+  type: string;
+
+  @Field(() => GraphQLJSON, { description: 'Event data in JSON format' })
+  @IsObject()
+  data: JSON;
+}