Feat proposal : manually confirm species

[alexbelgium]

Description : this feature proposal is to be able to visually show which species were verified to be confirmed, and which are not

How :

• proposal is to create a new txt file named confirmed_species_list.txt that would contain the name of the confirmed species
• when the Common Name is loaded in all page, it checks if it is part of this file. If yes, a little check icon appears next to it

Alternative considered :

• Confirming observations at the level of the detection with a storage of the status in the sqlite - this would be too cumbersome and increase needlessly the sqlite size

Opinions ?

This is how it could look like - by clicking on the icon you toggle the check or not. Once we have this list of confirmed species we might think of other usage ; such as sending an apprise message only when a specie not on this list is detected

The working code is here : https://github.com/alexbelgium/BirdNET-Pi/tree/confirmed_species