doc: add a logo (#23)

* doc: add a logo

* doc: move logo

* doc: improve style and video

Author: joshzcold

README.md

@@ -1,8 +1,12 @@
-# python.nvim
 
-Python Tools for Neovim
+<div align="center">
+<img src="./doc/python_nvim_logo.svg" alt="logo" width="200"/>
+  
+<h2>Python Tools for Neovim</h2>
 
-https://github.com/user-attachments/assets/025f8475-e946-4875-bc91-53508ea5d3fa
+</div>
+ 
+https://github.com/user-attachments/assets/5a637270-3785-4929-828b-628d553b5732
 
 ## Installation