hex view: file offsets + 'g' goto (dedicated input)

Add a file_regions server tool (get_fileregion_offset per segment) and
Program.file_regions/file_offset so a virtual address maps to its raw
on-disk offset without a format-specific header parser. The hex view now
shows a VA column and a file-offset column side by side, and the status
line reports file+off.

Goto moves to its own top-level #goto Input instead of overloading the
function-filter box (which is hidden with the names pane, so goto was
unreachable there). In the hex view 'g' jumps the cursor to an address
(bounds-checked against the image); elsewhere it navigates as before.

0 files changed, 0 insertions, 0 deletions