Fix test and appimage icon stuff

bouquin.desktop

@@ -2,5 +2,5 @@
 Type=Application
 Name=Bouquin
 Exec=Bouquin.AppImage
-Icon=/home/user/git/bouquin/bouquin/icons/bouquin.svg
-Categories=Office;TextEditor;Utility
+Icon=bouquin
+Categories=Office

pyproject.toml

@@ -32,6 +32,7 @@ pyproject-appimage = "^4.2"
 script = "bouquin"
 output = "Bouquin.AppImage"
 icon = "bouquin/icons/bouquin-light.svg"
+rename-icon = "bouquin.png"
 desktop-entry = "bouquin.desktop"
 
 [tool.vulture]

tests/test_main.py

@@ -42,6 +42,9 @@ def test_main_creates_and_shows(monkeypatch):
         def setOrganizationName(self, *_):
             pass
 
+        def setWindowIcon(self, *_):
+            pass
+
         def exec(self):
             return 0