Remember window size

[Sush-ruta]

Hi, First, thanks a ton for this wonderful app. Works like a charm. I just have a couple of requests if possible:

• Remember last window size. Since the default window size is quite small for me, I need to resize it each time I use the app which is not ideal.
• Toggle for tray icon since I never need it
• Might consider incorporating this excellent userstyle into the app: https://userstyles.world/style/13245/clean-deepl

Anyway, thanks again. :)

[termit-uanic]

@Sush-ruta you will be able to specify the desired window size in the settings if this PR-18 is accepted