Implementation of reported remarks + adding example of command output…

… streaming with os-lib support.

build.sbt

@@ -162,6 +162,7 @@ val zipkinSenderOkHttpVersion = "3.4.3"
 val resilience4jVersion = "2.3.0"
 val http4s_ce2_version = "0.22.15"
 val http4s_ce3_version = "0.23.30"
+val osLibVersion = "0.11.3"
 
 val tethysVersion = "0.29.3"
 
@@ -976,7 +977,7 @@ lazy val examples = (projectMatrix in file("examples"))
       "com.github.plokhotnyuk.jsoniter-scala" %%% "jsoniter-scala-macros" % jsoniterVersion,
       "io.github.resilience4j" % "resilience4j-circuitbreaker" % resilience4jVersion,
       "io.github.resilience4j" % "resilience4j-ratelimiter" % resilience4jVersion,
-      "com.lihaoyi" %% "os-lib" % "0.11.3",
+      "com.lihaoyi" %% "os-lib" % osLibVersion,
       pekkoStreams,
       logback
     ),

examples/src/main/scala/sttp/client4/examples/cmdOutputStreamingWithOsLib.scala

@@ -0,0 +1,19 @@
+package sttp.client4.examples
+
+import sttp.client4.*
+import os.*
+
+private val backend: SyncBackend = DefaultSyncBackend()
+private val path: os.Path = os.Path("/tmp/example-file.txt")
+
+@main def cmdOutputStreamingWithOsLib(): Unit = {
+  os.remove(path)
+  os.write(path, "CONTENT OF THE SIMPLE FILE USED IN THIS EXAMPLE")
+  val process = os.proc("cat", path.toString).spawn()
+  val request = basicRequest
+    .post(uri"http://httpbin.org/post")
+    .body(process.stdout.wrapped)
+    .response(asString)
+  val response = request.send(backend)
+  println(response)
+}