Multipart/from file impl. in CLI and test suite (#2355)

* Multipart/from file input and refactoring

* Multipart/from file input and refactoring

* fix query option

* After review

* Fixed docs

* Fixed Docs

* fmt

* merging

* added test suite for Cli

* updated

* fmt

* updated

* fmt

* fmt

* fmt

* fixed httpoptions

* fixed CommandGen

* fmt

* fix Scala 3

* fmt

* fix

* fix

* finish merging

* fmt

* fix test and match

* fixed match

* Update build.sbt

Co-authored-by: Jules Ivanic <guizmaii@users.noreply.github.com>

* merging

* merging

---------

Co-authored-by: Jules Ivanic <guizmaii@users.noreply.github.com>

build.sbt

@@ -206,8 +206,16 @@ lazy val zioHttpBenchmarks = (project in file("zio-http-benchmarks"))
 
 lazy val zioHttpCli = (project in file("zio-http-cli"))
   .settings(stdSettings("zio-http-cli"))
-  .settings(libraryDependencies ++= Seq(`zio-cli`))
+  .settings(
+    libraryDependencies ++= Seq(`zio-cli`),
+    testFrameworks += new TestFramework("zio.test.sbt.ZTestFramework"),
+    libraryDependencies ++= Seq(
+      `zio-test`,
+      `zio-test-sbt`,
+    ),
+  )
   .dependsOn(zioHttp)
+  .dependsOn(zioHttpTestkit % Test)
 
 lazy val zioHttpExample = (project in file("zio-http-example"))
   .settings(stdSettings("zio-http-example"))

zio-http-cli/src/main/scala/zio/http/endpoint/cli/CliClient.scala

@@ -0,0 +1,16 @@
+package zio.http.endpoint.cli
+
+import zio._
+
+import zio.http._
+
+/**
+ * CliClient is a wrapper for the Http Client of a HttpCliApp. It allows to
+ * provide a Client in different ways. DefaultClient provides the ZLayer
+ * Client.default.
+ */
+private[cli] sealed trait CliClient
+
+private[cli] final case class CliZIOClient(client: Client)                            extends CliClient
+private[cli] final case class CliZLayerClient(client: ZLayer[Any, Throwable, Client]) extends CliClient
+private[cli] final case class DefaultClient()                                         extends CliClient