Rework query param parsing and set window title to server name

[OmniTroid]

• Replace custom query param parsing with URLSearchParams, and move all defaults into that file
• add serverName to query params
• set window title to server name on joining
• add error checking on missing mandatory query param (server ip)
• formatting

In case of multiclienting in multiple tabs, this should be useful to keep track of which tab is connected to which server. If it hasn't been changed, the desktop client also does this. In the future, it might even make sense to add the area name to the window title as well.