Java lexer should support modern keywords

[Sam Brannen]

Name of the lexer

Java

Additional context

Keywords and features added since Java 5 should be supported by the Java lexer.

There may be more missing, but it appears support for the following needs to be added.

• @interface: should be treated the same as class and interface
  • See public @interface CsvToPerson example in the JUnit 5 User Guide.
• enum: support exists but it should be treated the same as class, interface, and @interface
• sealed
• permits
• record
• yield
• when