renderer: add area sampling scaling method (#201)

Adds Area Sampling to the list of scaling options. Works well to achieve a high-quality, smooth super-sampling effect. Dolphin has had this for a while and so has Ryujinx, so lui decided to port it.

Adapted from these two PRs:
https://github.com/Ryujinx/Ryujinx/pull/7304
https://github.com/dolphin-emu/dolphin/pull/11999

Credit: Torzu, lui

Reviewed-on: http://vub63vv26q6v27xzv2dtcd25xumubshogm67yrpaz2rculqxs7jlfqad.onion/torzu-emu/torzu/pulls/57
Co-authored-by: lui <lui@vub63vv26q6v27xzv2dtcd25xumubshogm67yrpaz2rculqxs7jlfqad.onion>
Co-committed-by: lui <lui@vub63vv26q6v27xzv2dtcd25xumubshogm67yrpaz2rculqxs7jlfqad.onion>

Co-authored-by: lui <lui@vub63vv26q6v27xzv2dtcd25xumubshogm67yrpaz2rculqxs7jlfqad.onion>
Co-authored-by: crueter <swurl@swurl.xyz>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/201
Co-authored-by: JPikachu <jpikachu.eden@gmail.com>
Co-committed-by: JPikachu <jpikachu.eden@gmail.com>

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/ui/SettingsFragmentPresenter.kt

@@ -220,6 +220,7 @@ class SettingsFragmentPresenter(
 
     private fun addGraphicsSettings(sl: ArrayList<SettingsItem>) {
         sl.apply {
+            // TODO(crueter): reorganize this, this is awful
             add(IntSetting.RENDERER_ACCURACY.key)
             add(IntSetting.RENDERER_RESOLUTION.key)
             add(IntSetting.RENDERER_VSYNC.key)

src/android/app/src/main/res/values/arrays.xml

@@ -250,6 +250,7 @@
         <item>@string/scaling_filter_gaussian</item>
         <item>@string/scaling_filter_scale_force</item>
         <item>@string/scaling_filter_fsr</item>
+        <item>@string/scaling_filter_area</item>
     </string-array>
 
     <integer-array name="rendererScalingFilterValues">
@@ -259,6 +260,7 @@
         <item>3</item>
         <item>4</item>
         <item>5</item>
+        <item>6</item>
     </integer-array>
 
     <string-array name="rendererAntiAliasingNames">

src/android/app/src/main/res/values/strings.xml

@@ -863,6 +863,7 @@
     <string name="scaling_filter_gaussian">Gaussian</string>
     <string name="scaling_filter_scale_force">ScaleForce</string>
     <string name="scaling_filter_fsr">AMD FidelityFX™ Super Resolution</string>
+    <string name="scaling_filter_area">Area</string>
 
     <!-- Anti-Aliasing -->
     <string name="anti_aliasing_none">None</string>