Rewrite samples using new API (#3021)

samples/workers/README.md

@@ -38,6 +38,6 @@ computation results. Afterwards, worker execution termination is requested with
 
 To build use `../gradlew assemble`.
 
-To run use `../gradlew runProgram` or execute the program directly:
+To run use `../gradlew runReleaseExecutableWorkers` or execute the program directly:
 
     ./build/bin/workers/main/release/executable/workers.kexe

samples/workers/build.gradle

@@ -6,12 +6,11 @@ plugins {
 def hostPreset = MPPTools.defaultHostPreset(project)
 
 kotlin {
-    targets {
-        fromPreset(hostPreset, 'workers') {
-            compilations.main.outputKinds 'EXECUTABLE'
-            compilations.main.entryPoint 'sample.workers.main'
+    targetFromPreset(hostPreset, 'workers') {
+        binaries {
+            executable() {
+                entryPoint = 'sample.workers.main'
+            }
         }
     }
-}
-
-MPPTools.createRunTask(project, 'runProgram', kotlin.targets.workers)
+}