create the eventual dream cli, like bigsleep library

dalle2_pytorch/cli.py

@@ -2,3 +2,8 @@ import click
 
 def main():
     pass
+
+@click.command()
+@click.argument('text')
+def dream(text):
+    return image

setup.py

@@ -7,6 +7,7 @@ setup(
   entry_points={
     'console_scripts': [
       'dalle2_pytorch = dalle2_pytorch.cli:main',
+      'dream = dalle2_pytorch.cli:dream'
     ],
   },
   version = '0.0.2',