Data: provide a blur mod for games with bloom

Add a mod for all games with bloom targets that blurs the bloom based on resolution using a custom material.  The shader exposes bloom brightness and the amount of spread through uniforms (not exposed in the UI yet).

The original shader logic was done by TryTwo.  This shader was reworked for graphics mods and cleaned up slightly.

Co-authored-by: TryTwo <[email protected]>

Data/Sys/Load/GraphicMods/All Games Blurred Bloom/metadata.json

@@ -0,0 +1,41 @@
+{
+	"meta":
+	{
+		"title": "Bloom Blurred",
+		"author": "Dolphin Team",
+		"description": "Modifies bloom effects to blur them to their native resolution.  Results in bloom looking much more natural at higher resolutions but the blur may be too intense in some games."
+	},
+	"features":
+	[
+		{
+			"group": "Bloom",
+			"action": "custom_pipeline",
+			"action_data":
+			{
+				"material_asset": "dolphin_bloom_blur_horizontal"
+			}
+		}
+	],
+	"assets": [
+	{
+		"data": {
+			"metadata": "blur.rastershader",
+			"pixel_shader": "blur.ps.glsl",
+			"vertex_shader": "blur.vs.glsl"
+		},
+		"name": "dolphin_bloom_blur"
+	},
+	{
+		"data": {
+			"metadata": "blur_horizontal.rastermaterial"
+		},
+		"name": "dolphin_bloom_blur_horizontal"
+	},
+	{
+		"data": {
+			"metadata": "blur_vertical.rastermaterial"
+		},
+		"name": "dolphin_bloom_blur_vertical"
+	}
+  ]
+}