add stub test, add pyproject.toml, add basic structure

old_README.md

@@ -0,0 +1,21 @@
+# nexus-sync
+
+a utility that allows you to manage your computers.
+
+*Main Idea*
+server can send to every client "what to do". Centralized control for all clients.
+
+## Server-side
+
+- (to future) works in docker container
+- accept connections on _some_ port with correct uuid from client
+- works via API requests
+- use _some_ database
+
+## Client-side
+
+- with _some_ period of time, send info to the server
+- if server want client to execute some command
+  - decrease fetch time period
+  - execute command
+  - send result back to the server