Add the Application class and integrate it into the CLI entry point

src/epstein/application.py

@@ -0,0 +1,7 @@
+class Application:
+    def __init__(self):
+        pass
+
+    def run(self):
+        pass
+    

src/epstein/command.py

@@ -1,7 +1,9 @@
-from epstein.application import *
+from epstein.application import Application
 
 def main():
     print("hello world")
+    app = Application()
+    app.run()
 
 if __name__ =="__main__":
     main()