Improve i3 configurations to work alongside Plasma

+ Add alias to restart plasmashell
+ Fix date display in conky for i3 sessions
+ Fix polybar height for better display with new font size
+ Add floating rules in i3 for Steam and Signal
+ Use i3 configuration to bind custom keys instead of xbindkeys
+ Relocate `.desktop` files to `.local/share/applications`
+ Symlink desktop files for startup applications to `.config/autostart`

.local/share/applications/jetbrains-toolbox.desktop

@@ -0,0 +1,15 @@
+[Desktop Entry]
+Icon=/home/kapper/.local/share/JetBrains/Toolbox/toolbox.svg
+Exec=/home/kapper/.local/share/JetBrains/Toolbox/bin/jetbrains-toolbox --minimize
+Version=1.0
+Type=Application
+Categories=Development
+Name=JetBrains Toolbox
+StartupWMClass=jetbrains-toolbox
+Terminal=false
+MimeType=x-scheme-handler/jetbrains;
+X-GNOME-Autostart-enabled=true
+StartupNotify=false
+X-GNOME-Autostart-Delay=10
+X-MATE-Autostart-Delay=10
+X-KDE-autostart-after=panel