gpu: add Texture.ComponentType enum

Signed-off-by: Stephen Gutekanst <stephen@hexops.com>

gpu/src/Texture.zig

@@ -7,3 +7,10 @@ pub const Aspect = enum(u32) {
     plane0_only = 0x00000003,
     plane1_only = 0x00000004,
 };
+
+pub const ComponentType = enum(u32) {
+    float = 0x00000000,
+    sint = 0x00000001,
+    uint = 0x00000002,
+    depth_comparison = 0x00000003,
+};