create dirs

Author: czgdp1807

ci/build.xsh

@@ -47,6 +47,8 @@ cd lpython-$lpython_version
 
 mkdir test-bld
 cd test-bld
+mkdir src
+mkdir runtime
 cp ../../src/runtime/lpython_parser.py src/runtime
 # Note: we have to build in Release mode on Windows, because `llvmdev` is
 # compiled in Release mode and we get link failures if we mix and match build