Rename library files

lib/preludes/raymath-prelude.zig

@@ -0,0 +1,23 @@
+// raylib-zig (c) Nikolas Wipper 2023
+
+const rl = @import("raylib-zig");
+const cdef = @import("raymath-ext.zig");
+const std = @import("std");
+
+test {
+    std.testing.refAllDeclsRecursive(@This());
+}
+
+const Matrix = rl.Matrix;
+const Quaternion = rl.Quaternion;
+const Vector2 = rl.Vector2;
+const Vector3 = rl.Vector3;
+const Vector4 = rl.Vector4;
+
+pub const float3 = extern struct {
+    v: [3]f32,
+};
+
+pub const float16 = extern struct {
+    v: [16]f32,
+};