fix(deno-client): wrap the deno-postgres client and not the query statement

deno-client/pg.ts

@@ -1,14 +1,31 @@
 import { Client } from "https://deno.land/x/postgres@v0.16.1/mod.ts"
-import { type Resource, type Sql } from "./mod.ts"
+import { type Resource } from "./mod.ts"
 
-export async function pgQuery(
-    db: Resource<"postgresql">,
-    query: Sql
+/**
+ * deno-postgres client API is very flexible:
+ * https://deno.land/x/postgres@v0.16.1/mod.ts?s=QueryClient
+ * 
+ * @param db the postgresql resource to generate the client for
+ * 
+ * @returns the client for the resource
+ * 
+ * Usage:
+ * Static query:
+ * ```ts
+ * const {rows} = await pgClient(db).queryObject(
+ *   "SELECT ID, NAME FROM CLIENTS"
+ * );
+ * ```
+ * 
+ * Prepared Statements:
+ * ```ts
+ * const { rows } = await pgClient(db).queryObject`SELECT ID, NAME FROM CLIENTS WHERE ID = ${id}`;
+ * ```
+ */
+export function pgClient(
+    db: Resource<"postgresql">
 ) {
     db.database = db.dbname
     db.hostname = db.host
-
-    const returned_query = await new Client(db).queryObject(query)
-
-    return returned_query.rows
+    return new Client(db)
 }