Introduces the core Arm32 decoder, including the instruction parsing
mechanism and an initial set of defined instructions.
Signed-off-by: Ronald Caesar <github43132@proton.me>
Strengthens the decoder's foundation but does not yet implement the core
instruction lookup table logic or the public arm32_decode API. These
will be addressed in future patches.
Signed-off-by: Ronald Caesar <github43132@proton.me>