Support SQL Agent skill (#1411)

* Support SQL Agent skill

* add MSSQL agent connector

* Add frontend to agent skills
remove FAKE_DB mock
reset skills to pickup child-skill dynamically

* add prompt examples for tools on untooled

* add better logging on SQL agents

* Wipe toolruns on each chat relay so tools can be used within the same session

* update comments

server/utils/agents/aibitat/plugins/sql-agent/SQLConnectors/Postgresql.js

@@ -0,0 +1,52 @@
+const pgSql = require("pg");
+
+class PostgresSQLConnector {
+  #connected = false;
+  constructor(
+    config = {
+      connectionString: null,
+    }
+  ) {
+    this.connectionString = config.connectionString;
+    this._client = new pgSql.Client({
+      connectionString: this.connectionString,
+    });
+  }
+
+  async connect() {
+    await this._client.connect();
+    this.#connected = true;
+    return this._client;
+  }
+
+  /**
+   *
+   * @param {string} queryString the SQL query to be run
+   * @returns {import(".").QueryResult}
+   */
+  async runQuery(queryString = "") {
+    const result = { rows: [], count: 0, error: null };
+    try {
+      if (!this.#connected) await this.connect();
+      const query = await this._client.query(queryString);
+      result.rows = query.rows;
+      result.count = query.rowCount;
+    } catch (err) {
+      console.log(this.constructor.name, err);
+      result.error = err.message;
+    } finally {
+      await this._client.end();
+      this.#connected = false;
+    }
+    return result;
+  }
+
+  getTablesSql() {
+    return `SELECT * FROM pg_catalog.pg_tables WHERE schemaname = 'public'`;
+  }
+  getTableSchemaSql(table_name) {
+    return ` select column_name, data_type, character_maximum_length, column_default, is_nullable from INFORMATION_SCHEMA.COLUMNS where table_name = '${table_name}'`;
+  }
+}
+
+module.exports.PostgresSQLConnector = PostgresSQLConnector;