fix: use system dependent separator in processorpath

Author: gersonsosa

frontend/src/main/scala/bloop/data/Project.scala

@@ -484,7 +484,8 @@ object Project {
       if (hasProcessorPath(options)) {
         val (before, after) = options.splitAt(options.indexOf("-processorpath") + 1)
         if (!after.head.contains(pluginPath)) {
-          before ::: s"${after.head}:$pluginPath" :: after.tail
+          val pluginProcessorpath = Seq(after.head, pluginPath).mkString(java.io.File.pathSeparator)
+          before ::: pluginProcessorpath :: after.tail
         } else options
       } else options
 

frontend/src/test/resources/scala-java-processorpath/project/project/build.properties

@@ -0,0 +1 @@
+sbt.version=1.7.2

frontend/src/test/scala/bloop/bsp/BspMetalsClientSpec.scala

@@ -507,17 +507,17 @@ class BspMetalsClientSpec(
           javacOptions(javacOptions.indexOf("-processorpath") + 1).contains(javaSemanticDBJar)
         )
 
-        val compiledState = build.state.compile(project).toTestState
+        val compiledState = build.state.compile(project)
         assert(compiledState.status == ExitStatus.Ok)
 
         assertSemanticdbFileForProject(
           "/main/scala/example/Main.scala",
-          compiledState,
+          compiledState.toTestState,
           projectName
         )
         assertSemanticdbFileForProject(
           "/main/java/example/FoobarValueAnalyzer.java",
-          compiledState,
+          compiledState.toTestState,
           projectName
         )
       }