Function parse

Parses an ELF image and returns its structured representation.

Produces the following sections:

• ELF Header – identification fields, type, machine, and entry point.
• Program Header Table – one child entry per program header (capped at 128).
• Section Header Table – one child entry per section header (capped at 256).

Both ELF32 and ELF64 formats are supported, as well as little-endian and big-endian data encodings. Field offsets are resolved at parse time via