add LICENSE, shaders, Cargo.lock, and AUR package

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

shaders/rainbow_lights.frag

@@ -0,0 +1,28 @@
+// v!
+// 
+#extension GL_OES_standard_derivatives : enable
+
+#ifdef GL_ES
+precision mediump float;
+#endif
+
+uniform float time;
+uniform vec2 resolution;
+#define r resolution
+#define t time*2.0
+void main( void ) {
+	
+	vec2 p= gl_FragCoord.xy/resolution.xy*2.-1.0;
+	
+	vec3 n = normalize(vec3(p,p.y));
+	 
+	vec3 c=vec3(-cos(t)*2.*n.y, 3.*sin(t+(cos(4.*p.y))),  1.-cos(t+sin(4.*n.z)));
+	 
+	  c.y +=  n.z-    length(2.5*n.y*n.z)*tan(sin(50.0*n.z+n.x));
+	  c.x -= -c.y-length(2.5*n.y*n.z)*tan(sin(50.0*n.z+n.x));
+	  c.z *= -c.x*length(2.5*n.y*n.z)*tan(sin(50.0*n.z+n.x));
+	 
+	
+	gl_FragColor=vec4(c*0.8, 1.0);
+	
+}