server: refactor pagination

* fix transaction usgae in repos
* other bug fixes

apps/server/src/kysely/pagination/pagination-options.ts

@@ -0,0 +1,35 @@
+import {
+  IsNumber,
+  IsOptional,
+  IsPositive,
+  IsString,
+  Max,
+  Min,
+} from 'class-validator';
+
+export class PaginationOptions {
+  @IsOptional()
+  @IsNumber()
+  @Min(1)
+  page = 1;
+
+  @IsOptional()
+  @IsNumber()
+  @IsPositive()
+  @Min(1)
+  @Max(100)
+  limit = 20;
+
+  @IsOptional()
+  @IsString()
+  query: string;
+
+  get offset(): number {
+    return (this.page - 1) * this.limit;
+  }
+}
+
+export enum PaginationSort {
+  ASC = 'asc',
+  DESC = 'desc',
+}