feat: Database Client (#2)

* feat(security): add quoted identifiers and literals
* feat: add ServerClient class
* feat: add DatabaseClient class

---------

Signed-off-by: github-actions <github-actions@github.com>
Co-authored-by: github-actions <github-actions@github.com>

Author: doublecompile

.projen/deps.json

@@ -25,7 +25,7 @@ const project = new typescript.TypeScriptProject({
   bugsUrl: `${projectUrl}/issues`,
 
   deps: ["pg"],
-  devDeps: ["@jest/globals"],
+  devDeps: ["@jest/globals", "@types/pg"],
 
   minNodeVersion: "18.0.0",
   workflowNodeVersion: "18.18.2",

.projen/tasks.json

@@ -34,10 +34,11 @@ import { Login, Role, Catalog } from "@libreworks/db-provision-pgsql";
 const username = "example_user";
 const password = "🙈";
 const owner = new Login(username, password);
+
 const admin = new Role("admin");
-const grants = [];
-grants.push(admin.assignTo(owner));
 const readers = new Role("readers");
+
+const grants = [admin.assignTo(owner)];
 const catalog = new Catalog("my_database");
 const schema = catalog.createSchema(username, owner);
 grants.push(
@@ -65,17 +66,19 @@ console.log(statements.join(";\n") + ";\n");
 The above example outputs the following SQL statements:
 
 ```sql
-CREATE USER example_user WITH PASSWORD '🙈';
-CREATE ROLE admin;
-CREATE ROLE readers;
-CREATE DATABASE my_database ENCODING 'UTF8';
-CREATE SCHEMA IF NOT EXISTS example_user AUTHORIZATION example_user;
-GRANT admin TO example_user;
-GRANT CONNECT, TEMP ON DATABASE my_database TO example_user;
-GRANT CONNECT, TEMP ON DATABASE my_database TO readers;
-GRANT USAGE ON SCHEMA example_user TO readers;
-GRANT SELECT ON ALL TABLES IN SCHEMA example_user TO readers;
-GRANT SELECT ON ALL SEQUENCES IN SCHEMA example_user TO readers;
-ALTER DEFAULT PRIVILEGES FOR USER example_user IN SCHEMA example_user GRANT SELECT ON TABLES TO readers;
-ALTER DEFAULT PRIVILEGES FOR USER example_user IN SCHEMA example_user GRANT SELECT ON SEQUENCES TO readers;
+CREATE USER "example_user" WITH PASSWORD '🙈';
+CREATE ROLE "admin";
+CREATE ROLE "readers";
+CREATE DATABASE "my_database" ENCODING 'UTF8';
+CREATE SCHEMA IF NOT EXISTS "example_user" AUTHORIZATION "example_user";
+GRANT "admin" TO "example_user";
+GRANT CONNECT, TEMP ON DATABASE "my_database" TO "example_user";
+GRANT CONNECT, TEMP ON DATABASE "my_database" TO "readers";
+GRANT USAGE ON SCHEMA "example_user" TO "readers";
+GRANT SELECT ON ALL TABLES IN SCHEMA "example_user" TO "readers";
+GRANT SELECT ON ALL SEQUENCES IN SCHEMA "example_user" TO "readers";
+ALTER DEFAULT PRIVILEGES FOR USER "example_user" IN SCHEMA "example_user" GRANT SELECT ON TABLES TO "readers";
+ALTER DEFAULT PRIVILEGES FOR USER "example_user" IN SCHEMA "example_user" GRANT SELECT ON SEQUENCES TO "readers";
 ```
+
+Because all identifiers are quoted, that means the objects will be created using the same character casing as provided. Without double quotes, PostgreSQL creates objects with lowercase identifiers.