Improve quality of LST: replace applicable markers with LST elements

[traceyyoshima]

• Asterisk:
  Similar to Kotlin, we may replace this with a unary operation.
• FunctionKeyword:
  This is likely already replaced by J.Modifier, but should be confirmed.
• PostFixOperator:
  Similar to Kotlin, these may be replaced by trees. Note a general fix that applies to both languages is likely possible.
• TypeReferencePrefix:
  Similar to the PostFixOperator.