feat(rendering): add Shader.SetFloat uniform setter

Rendering/Shader.cs

@@ -36,6 +36,9 @@ public sealed class Shader : IDisposable
     public void SetInt(string name, int value) =>
         GL.Uniform1(this.Location(name), value);
 
+    public void SetFloat(string name, float value) =>
+        GL.Uniform1(this.Location(name), value);
+
     private int Location(string name)
     {
         if (this._uniforms.TryGetValue(name, out int location)) return location;