Implement parameter paging and bank navigation

[joaodotwork]

Description

Support more than 8 parameters by implementing paged banks navigable via Push 2's Page Left/Right buttons and lower display buttons.

Tasks

• Organize parameters into banks of 8
• Page Left (CC 62) / Page Right (CC 63) cycle through banks
• Lower display buttons (CC 20–27) for direct page selection
• Upper display buttons (CC 102–109) for parameter bank categories
• Render page indicators (arrows at edges when more pages exist)
• Render page/bank name in the bottom label row (Y 140–160)
• Preserve encoder-to-parameter mapping when switching pages

Acceptance Criteria

• Can navigate through all discovered VDMX parameters in banks of 8
• Current page is visually indicated on the display
• Page switching is instant with no visual glitches
• Encoders immediately map to the new page's parameters on switch

Technical Notes

• Page Left: CC 62 (127 = press, 0 = release)
• Page Right: CC 63 (127 = press, 0 = release)
• Arrow buttons: Left CC 44, Right CC 45, Up CC 46, Down CC 47