table grid display, SQL for browse table is generated on FE

packages/datalib/src/GridDisplay.ts

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+import {Select} from '@dbgate/sqltree'
+
+export default abstract class GridDisplay {
+    abstract getPageQuery(offse: number, count: number): string;
+}

packages/datalib/src/TableGridDisplay.ts

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+import GridDisplay from "./GridDisplay";
+import { Select } from "@dbgate/sqltree";
+import { TableInfo, EngineDriver } from "@dbgate/types";
+
+export default class TableGridDisplay extends GridDisplay {
+  constructor(public table: TableInfo, public driver: EngineDriver) {
+    super();
+  }
+
+  getPageQuery(offset: number, count: number) {
+    const select = new Select();
+    if (this.driver.dialect.limitSelect) select.topRecords = count;
+    if (this.driver.dialect.rangeSelect)
+      select.range = { offset: offset, limit: count };
+    select.from = this.table;
+    select.selectAll = true;
+    const sql = select.toSql(this.driver);
+    return sql;
+  }
+}

packages/datalib/src/index.ts

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+export { default as GridDisplay } from "./GridDisplay";
+export { default as TableGridDisplay } from "./TableGridDisplay";