add pg-async module

build.sbt

@@ -1,23 +1,37 @@
-val prjScalaVersion = "3.7.1"
+val pgAsyncVersion    = "0.3.124"
+val catsEffectVersion = "3.6.2"
+
+val commonSettings = Seq(
+  organization := "minisql",
+  scalaVersion := "3.7.1",
+  scalacOptions ++= Seq(
+    "-deprecation",
+    "-feature",
+    "-source:3.7-migration",
+    "-rewrite"
+  )
+)
 
 lazy val root = (project in file("."))
+  .aggregate(core, pgAsync)
+
+lazy val pgAsync = (project in file("pg-async"))
+  .dependsOn(core)
   .aggregate(core)
+  .settings(commonSettings: _*)
   .settings(
-    name         := "minisql",
-    scalaVersion := prjScalaVersion
+    name := "minisql-pg-async",
+    libraryDependencies ++= Seq(
+      "org.typelevel" %% "cats-effect"      % catsEffectVersion,
+      "com.dripower"  %% "postgresql-async" % pgAsyncVersion
+    )
   )
 
 lazy val core = (project in file("core"))
+  .settings(commonSettings: _*)
   .settings(
-    name         := "minisql-core",
-    scalaVersion := prjScalaVersion,
+    name := "minisql-core",
     libraryDependencies ++= Seq(
       "org.scalameta" %% "munit" % "1.1.1" % Test
-    ),
-    scalacOptions ++= Seq(
-      "-deprecation",
-      "-feature",
-      "-source:3.7-migration",
-      "-rewrite"
     )
   )