feat: drawing popout now clips strokes again + add redo + add undo and redo keybinds

Plugins/ZShell/Internal/shaders/strokeholemask.frag

@@ -0,0 +1,22 @@
+#version 440
+
+QC_INCLUDE "customfrag.glsl"
+
+
+float sdRoundRect(vec2 p, vec2 b, float r) {
+    vec2 q = abs(p) - b + vec2(r);
+    return min(max(q.x, q.y), 0.0) + length(max(q, 0.0)) - r;
+}
+
+void main() {
+    float keep = 1.0;
+
+    if (data4.x > 0.5) {
+        vec2 p = fragCoord - data1.xy;
+        float feather = max(data3.y, 0.0001);
+        keep = smoothstep(-feather, feather, sdRoundRect(p, data1.zw, data3.x));
+    }
+
+    float a = keep * data2.w * globalAlpha * antialiasingAlpha();
+    fragColor = vec4(data2.rgb * a, a);
+}