fix: move etebase_fastapi module from toplevel to under etebase_server

This is in preparation for creating a python package, which should only
occupy the "etebase_server" name in the global module namespace.

etebase_server/asgi.py

@@ -7,7 +7,7 @@ django_application = get_asgi_application()
 
 
 def create_application():
-    from etebase_fastapi.main import create_application
+    from etebase_server.fastapi.main import create_application
 
     app = create_application()
 

etebase_server/fastapi/main.py

@@ -43,7 +43,7 @@ def create_application(prefix="", middlewares=[]):
     app.include_router(websocket_router, prefix=f"{BASE_PATH}/ws", tags=["websocket"])
 
     if settings.DEBUG:
-        from etebase_fastapi.routers.test_reset_view import test_reset_view_router
+        from .routers.test_reset_view import test_reset_view_router
 
         app.include_router(test_reset_view_router, prefix=f"{BASE_PATH}/test/authentication")