Added command line tool and removed lib folder from gitignore.

util/python_module/sppcmd/__init__.py

@@ -0,0 +1,24 @@
+"""
+Scons++ Command Line Interface
+"""
+
+import argparse
+import logging
+
+from .ccjson import make_ccjson_parser
+
+_STDOUT_LOG_FORMAT = '%(message)s'
+
+def run_spp_cmd() -> int:
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--verbose', '-v', action='store_true')
+    subparsers = parser.add_subparsers(required=True)
+
+    make_ccjson_parser(subparsers)
+
+    args = parser.parse_args()
+
+    logging.basicConfig(format=_STDOUT_LOG_FORMAT, level=logging.DEBUG if args.verbose else logging.INFO)
+    args.handler(args)
+
+    return 0