Implementation of DIR/DIRECTORY command with output parity

[Irwin1985]

This PR implements the DIR and DIRECTORY commands.

Key Changes:

• Preprocessor Strategy: After extensive testing with various #command rules, I determined that the VFP-style wildcards (ej: DIR *.dbf) caused parsing conflicts. I opted for a "Runtime Parsing" approach where the entire command line is passed as a string to __VfpDir(cCommand).
• Variable Evaluation: Implemented [NeedAccessToLocals(TRUE)] in the runtime function. This allows the command to correctly evaluate local variables used in the TO FILE (cVar) clause via Evaluate().
• Output Fidelity: The output now matches VFP format.
  • Detailed DBF view: Displays non-DBF files in the classic columnar format.
  • Summary info: Displays total bytes, file count, and available disk space.
• Support for clauses: Correctly handles LIKE, ON <drive>, TO FILE, and TO PRINTER.

[RobertvanderHulst]

Irwin,
Do you expect the variable evaluation to update local variables? If not, then you should set the parameter of the NeedAccessToLocals attribute to FALSE.

[Irwin1985]

You're right Robert. My bad. I just need to reading access.