Fix system path separators for config globbing (#2327)

fixes #2279

Author: Fishbowler

maestro-orchestra/src/main/java/maestro/orchestra/workspace/WorkspaceExecutionPlanner.kt

@@ -63,7 +63,7 @@ object WorkspaceExecutionPlanner {
         val globs = workspaceConfig.flows ?: listOf("*")
 
         val matchers = globs.flatMap { glob ->
-            directories.map { it.fileSystem.getPathMatcher("glob:${it.pathString}/$glob") }
+            directories.map { it.fileSystem.getPathMatcher(escapeSlashesForWindows("glob:${it.pathString}${it.fileSystem.separator}$glob")) }
         }
 
         val unsortedFlowFiles = flowFiles + flowFilesInDirs.filter { path ->
@@ -176,6 +176,10 @@ object WorkspaceExecutionPlanner {
         return file.fileName.toString().substringBeforeLast(".")
     }
 
+    private fun escapeSlashesForWindows(pathString: String): String {
+        return pathString.replace("\\","\\\\")
+    }
+
     data class FlowSequence(
         val flows: List<Path>,
         val continueOnFailure: Boolean? = true,