🏠 Simplify home view bottom actions

Implementation Complete

Changes made to DayViewController.swift

Modified ActionButtonsTableViewCell class:

1. ●Removed logFoodAction callback - No longer needed
2. ●Removed logFoodButton - The "Log Food" text button removed
3. ●Changed newMealButton - Now displays a plus icon instead of "New Meal" text, with circular/capsule glass style (52x52 size)
4. ●Added dividerView - Subtle horizontal separator line (0.5pt, .separator color at 50% opacity) above the button
5. ●Changed stack layout - From horizontal (side-by-side buttons) to vertical (divider on top, centered button below)

Also removed cell.logFoodAction assignments in two places where the cell is configured.

Visual change:

BEFORE:
┌──────────────────┐  ┌──────────────────┐
│    Log Food      │  │    New Meal      │
└──────────────────┘  └──────────────────┘

AFTER:
──────────────────────────────────────────  ← Divider
                  ┌───┐
                  │ + │
                  └───┘