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/clean/WhiteSpace.cjs

@@ -0,0 +1,7 @@
+'use strict';
+
+function cleanWhitespace(node, item, list) {
+    list.remove(item);
+}
+
+module.exports = cleanWhitespace;