Use local svgo.cmd wrapper binary

Switch SVG optimizer resolution from bin/svgo-cli.exe to bin/svgo.cmd.

Update unit tests to validate the new local binary path behavior.

Co-Authored-By: Abacus.AI CLI <agent@abacus.ai>

bin/svgo-client/node_modules/csso/cjs/replace/Url.cjs

@@ -0,0 +1,8 @@
+'use strict';
+
+function Url(node) {
+    // convert `\\` to `/`
+    node.value = node.value.replace(/\\/g, '/');
+}
+
+module.exports = Url;