IJPL-797 intellij.platform.ide.util.io review internal API: ProcessService and WinProcessTerminator are internal

The class was created to reuse existing code in different products inside the company. It hasn't been supposed to be used by third-party plugins.

No external usages were found.

The same applies to `WinProcessTerminator`, which uses `ProcessService`.

GitOrigin-RevId: 45b764ca47222ae71fd71b7a44f3a649f2dcc15a

platform/platform-util-io-impl/api-dump-unreviewed.txt

@@ -1,5 +1,4 @@
 f:com.intellij.execution.process.ProcessServiceImpl
-- com.intellij.execution.process.ProcessService
 - <init>():V
 - getCommand(java.lang.Process):java.util.List
 - hasControllingTerminal(java.lang.Process):Z

platform/platform-util-io/api-dump-unreviewed.txt

@@ -381,18 +381,6 @@ c:com.intellij.execution.process.ProcessOutput
 - setCancelled():V
 - setExitCode(I):V
 - setTimeout():V
-com.intellij.execution.process.ProcessService
-- getCommand(java.lang.Process):java.util.List
-- s:getInstance():com.intellij.execution.process.ProcessService
-- a:hasControllingTerminal(java.lang.Process):Z
-- a:isLocalPtyProcess(java.lang.Process):Z
-- a:killWinProcess(I):V
-- a:killWinProcessRecursively(java.lang.Process):V
-- a:sendWinProcessCtrlC(I):Z
-- a:sendWinProcessCtrlC(I,java.io.OutputStream):Z
-- a:sendWinProcessCtrlC(java.lang.Process):Z
-- a:startPtyProcess(java.lang.String[],java.lang.String,java.util.Map,com.intellij.execution.process.LocalPtyOptions,com.intellij.openapi.application.Application,Z,Z,Z):java.lang.Process
-- a:winPtyChildProcessId(java.lang.Process):java.lang.Integer
 com.intellij.execution.process.ProcessTreeKiller
 - a:killProcessTree():Z
 c:com.intellij.execution.process.ProcessWrapper
@@ -450,8 +438,6 @@ f:com.intellij.execution.process.SynchronizedProcessOutput
 - setCancelled():V
 - setExitCode(I):V
 - setTimeout():V
-f:com.intellij.execution.process.WinProcessTerminator
-- sf:terminateWinProcessGracefully(com.intellij.execution.process.KillableProcessHandler,com.intellij.execution.process.ProcessService):Z
 f:com.intellij.execution.process.WinRunnerMediator
 - s:withExternalConsole(com.intellij.execution.configurations.GeneralCommandLine):V
 f:com.intellij.execution.process.impl.ProcessListUtil

platform/platform-util-io/src/com/intellij/execution/process/ProcessService.java

@@ -1,8 +1,9 @@
-// Copyright 2000-2021 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.execution.process;
 
 import com.intellij.openapi.application.Application;
 import com.intellij.openapi.application.ApplicationManager;
+import org.jetbrains.annotations.ApiStatus;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -10,6 +11,7 @@ import java.io.OutputStream;
 import java.util.List;
 import java.util.Map;
 
+@ApiStatus.Internal
 public interface ProcessService {
   @NotNull
   Process startPtyProcess(String @NotNull [] command,

platform/platform-util-io/src/com/intellij/execution/process/WinProcessTerminator.kt

@@ -1,11 +1,13 @@
-// Copyright 2000-2021 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 @file:JvmName("WinProcessTerminator")
+@file:Internal
 
 package com.intellij.execution.process
 
 import com.intellij.openapi.application.ApplicationManager
 import com.intellij.openapi.diagnostic.logger
 import com.intellij.openapi.util.Key
+import org.jetbrains.annotations.ApiStatus.Internal
 import java.util.concurrent.CompletableFuture
 import java.util.concurrent.TimeUnit