add example of how to use log4cats module

Author: bpholt

log4cats/src/test/resources/logback-test.xml

@@ -0,0 +1,11 @@
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%date | log_level=%-5level '%msg'%n</pattern>
+        </encoder>
+    </appender>
+
+    <root level="debug">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>

log4cats/src/test/scalajvm/com/dwolla/util/tagless/logging/Example.scala

@@ -0,0 +1,35 @@
+package test
+
+import cats.*
+import cats.effect.*
+import cats.tagless.*
+import cats.tagless.aop.*
+import com.dwolla.util.tagless.logging.*
+import org.typelevel.log4cats.slf4j.Slf4jFactory
+
+trait MyAlgebra[F[_]] {
+  def foo(foo: Int, bar: String): F[Boolean]
+}
+
+object MyAlgebra {
+  implicit val showInt: Show[Int] = Show.fromToString
+  implicit val showString: Show[String] = Show.show[String](identity)
+  implicit val showBoolean: Show[Boolean] = Show.fromToString
+
+  implicit val loggingMyAlgebraAspect: Aspect[MyAlgebra, Show, Show] = Derive.aspect
+}
+
+object MyApp extends IOApp.Simple {
+  private val fakeMyAlgebra: MyAlgebra[IO] = new MyAlgebra[IO] {
+    override def foo(foo: Int, bar: String): IO[Boolean] =
+      IO.pure(true)
+  }
+
+  override def run: IO[Unit] =
+    Slf4jFactory.create[IO].create.flatMap { implicit logger =>
+      fakeMyAlgebra
+        .withMethodLogging
+        .foo(42, "The Answer to the Ultimate Question of Life, the Universe, and Everything")
+        .flatMap(IO.println)
+    }
+}

project/AsyncUtilsBuildPlugin.scala

@@ -228,7 +228,12 @@ object AsyncUtilsBuildPlugin extends AutoPlugin {
       },
       tlVersionIntroduced := Map("2.12" -> "1.2.0", "2.13" -> "1.2.0"),
     )
-    .jvmPlatform(Scala2Versions)
+    .jvmPlatform(Scala2Versions, Seq(
+      libraryDependencies ++= Seq(
+        "org.typelevel" %%% "log4cats-slf4j" % "2.6.0" % Test,
+        "ch.qos.logback" % "logback-classic" % "1.4.5" % Test,
+      ),
+    ))
     .jsPlatform(Scala2Versions)
 
   private lazy val `scalafix-rules` =