feat: create, view, edit, delete data-table (#365)

- Add view-data-table
- Add edit-data-table
- Add create-data-table

Fixes #171

Co-authored-by: Chirag Gupta <gchirag@apache.org>

src/app/system/system.service.ts

@@ -184,6 +184,39 @@ export class SystemService {
     return this.http.post('/codes', code);
   }
 
+  /**
+   * @param {any} dataTable Data Table to be created.
+   * @return {Observable<any>}
+   */
+  createDataTable(dataTable: any): Observable<any> {
+    return this.http.post('/datatables', dataTable);
+  }
+
+  /**
+   * @param dataTableName Data Table Name.
+   * @return {Observable<any>}
+   */
+  getDataTable(dataTableName: string): Observable<any> {
+    return this.http.get(`/datatables/${dataTableName}`);
+  }
+
+  /**
+   * @param dataTableName Data Table Name.
+   * @return {Observable<any>}
+   */
+  deleteDataTable(dataTableName: string): Observable<any> {
+    return this.http.delete(`/datatables/${dataTableName}`);
+  }
+
+  /**
+   * @param dataTable Data Table.
+   * @param dataTableName Data Table Name.
+   * @return {Observable<any>}
+   */
+  updateDataTable(dataTable: any, dataTableName: string): Observable<any> {
+    return this.http.put(`/datatables/${dataTableName}`, dataTable);
+  }
+
   /**
    * @returns {Observable<any>} Configurations data.
    */