Function parse

Parses a PE (Portable Executable) image and returns its structured representation.

Produces the following sections:

• DOS Header – MZ stub up to the PE signature offset.
• PE Signature – the four-byte PE\0\0 marker.
• COFF File Header – machine type, section count, timestamp, and characteristics.
• Optional Header – entry point RVA, image base, subsystem (PE32 or PE32+).
• Section Table – one child entry per section header, plus a raw-data section added directly to the root for each section with non-zero raw content.

Supports both PE32 (magic 0x10B) and PE32+ / 64-bit (magic 0x20B) formats. Section table parsing is capped at 96 entries as a safety limit.