oml= command: Fix alignment and add permission-based coloring

[Ayushd785]

Description

The oml= command currently displays IO maps with ASCII art visualization but has alignment issues and lacks comprehensive coloring based on memory permissions. This makes it harder to read compared to the recently improved dm= command.

screenshot-

Proposed changes:

• Fix column alignment issues in rz_table_visual_list() function
• Add permission-based color mapping (RWX=widget_sel, X=ai_exec, W=ai_write, R=ai_read)
• Apply colors to memory addresses, visual bars, and permission strings