add project links to README

set valid url for homeserver

fixes https://todo.sr.ht/~thrrgilag/pantalaimon-ut/3

create config path if it doesn't exist before save

resovles https://todo.sr.ht/~thrrgilag/pantalaimon-ut/2

added about page

updated app icon

updated build instructions and fixed spelling

remove unused imports

Initial project setup.