Default command now executes queries, --csv or --json

I replaced the following commands:

    sqlite-utils json db.db "select * from table"
    sqlite-utils csv db.db "select * from table"

With a unified 'query' command, which is now set as the default:

    sqlite-utils db.db "select * from table"
    sqlite-utils db.db "select * from table" --csv

setup.py

@@ -22,7 +22,7 @@ setup(
     version=VERSION,
     license="Apache License, Version 2.0",
     packages=find_packages(),
-    install_requires=["click"],
+    install_requires=["click", "click-default-group"],
     setup_requires=["pytest-runner"],
     extras_require={"test": ["pytest", "black"]},
     entry_points="""