feat: Implement 32:9 aspect ratio

This commit introduces support for a 32:9 aspect ratio throughout Citron.

Key changes include:

-   **Enum Updates**: Added `R32_9` to `Settings::AspectRatio` and `Layout::AspectRatio` enums, ensuring consistent integer mapping for casting between them.
-   **Core Logic**:
    -   Modified `UISettings::CalculateWidth` to correctly compute width for the 32:9 ratio.
    -   Updated `Layout::EmulationAspectRatio` to handle the new `R32_9` case and return the appropriate float value (9.0f / 32.0f).
-   **Android Integration**:
    -   Updated `EmulationFragment.kt` and `EmulationActivity.kt` (for Picture-in-Picture) to recognize and apply the 32:9 aspect ratio (mapping setting value `4` to `Rational(32, 9)`).
-   **UI Configuration**:
    -   Added "Force 32:9" to the aspect ratio selection in the graphics settings UI via `shared_translation.cpp`. This string is translatable.

This enhancement allows users to utilize ultra-widescreen 32:9 displays for a more immersive experience.

Signed-off-by: Zephyron <zephyron@citron-emu.org>

src/android/app/src/main/java/org/citron/citron_emu/activities/EmulationActivity.kt

@@ -1,4 +1,5 @@
 // SPDX-FileCopyrightText: 2023 yuzu Emulator Project
+// SPDX-FileCopyrightText: 2025 citron Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 package org.citron.citron_emu.activities
@@ -312,6 +313,7 @@ class EmulationActivity : AppCompatActivity(), SensorEventListener {
             1 -> Rational(4, 3)
             2 -> Rational(21, 9)
             3 -> Rational(16, 10)
+            4 -> Rational(32, 9)
             else -> null // Best fit
         }
         return this.apply { aspectRatio?.let { setAspectRatio(it) } }

src/android/app/src/main/java/org/citron/citron_emu/fragments/EmulationFragment.kt

@@ -1,4 +1,5 @@
 // SPDX-FileCopyrightText: 2023 yuzu Emulator Project
+// SPDX-FileCopyrightText: 2025 citron Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 package org.citron.citron_emu.fragments
@@ -577,6 +578,7 @@ class EmulationFragment : Fragment(), SurfaceHolder.Callback {
             1 -> Rational(4, 3)
             2 -> Rational(21, 9)
             3 -> Rational(16, 10)
+            4 -> Rational(32, 9)
             else -> null // Best fit
         }
         when (verticalAlignment) {