add various systray services

blueman-applet
megasync
protonmail-bridge
protonvpn-app

blueman-applet.service

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+[Unit]
+Description=a tray applet for managing bluetooth
+Documentation=man:blueman-applet
+BindsTo=labwc-session.target
+
+[Service]
+Type=simple
+ExecStart=/usr/bin/blueman-applet
+
+[Install]
+WantedBy=labwc-session.target

megasync.service

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+[Unit]
+Description=Easy automated syncing between your computers and your MEGA Cloud Drive 
+Documentation=https://help.mega.io/installs-apps/desktop-syncing
+BindsTo=labwc-session.target
+After=labwc-session.target
+
+[Service]
+Type=simple
+Environment="QT_QPA_PLATFORM=xcb"
+ExecStart=/usr/bin/megasync
+
+[Install]
+WantedBy=labwc-session.target

protonmail-bridge.service

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+[Unit]
+Description= Proton Mail Bridge application 
+Documentation=https://github.com/ProtonMail/proton-bridge
+BindsTo=labwc-session.target
+After=labwc-session.target
+ConditionEnvironment=WAYLAND_DISPLAY
+
+[Service]
+Type=simple
+ExecStart=/usr/bin/protonmail-bridge
+
+[Install]
+WantedBy=labwc-session.target

protonvpn-app.service

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+[Unit]
+Description=Official ProtonVPN Linux app 
+Documentation=https://github.com/ProtonVPN/proton-vpn-gtk-app
+BindsTo=labwc-session.target
+After=labwc-session.target
+
+[Service]
+Type=simple
+ExecStart=/usr/bin/protonvpn-app
+
+[Install]
+WantedBy=labwc-session.target