Fix compilation of scala3-presentation-compiler - add missing import

Author: WojciechMazur

presentation-compiler/src/main/dotty/tools/pc/completions/CompletionProvider.scala

@@ -21,6 +21,7 @@ import dotty.tools.dotc.interactive.Interactive
 import dotty.tools.dotc.interactive.Completion
 import dotty.tools.dotc.interactive.InteractiveDriver
 import dotty.tools.dotc.parsing.Tokens
+import dotty.tools.dotc.profile.Profiler
 import dotty.tools.dotc.util.SourceFile
 import dotty.tools.pc.AutoImports.AutoImportEdits
 import dotty.tools.pc.AutoImports.AutoImportsGenerator