list_view: jump to first/last item with Home/End keys

[RobLoach]

The list_view handles Up/Down (one item at a time) and LB/RB / NK_KEY_SCROLL_UP/DOWN (page scroll), but has no Home or End key handling to jump directly to the first or last item. See nuklear_console_list_view.h:416–480 for the full navigation block.

Suggested Implementation

Add two branches after the existing LB/RB page-scroll block:

nk_input_is_key_pressed(..., NK_KEY_TEXT_START) → selected = 0
nk_input_is_key_pressed(..., NK_KEY_TEXT_END)   → selected = item_count - 1

Mirror with a gamepad equivalent (e.g. DPAD_SELECT) if appropriate.

QA

• Pressing Home with a list_view focused moves selection to index 0.
• Pressing End moves to the last item.
• Test added in nuklear_console_test.c.