Add off Play Store Links

[louisrousseau]

For the sake of having a lightweight installation I'd like to skip on the gapps install on this old phone, the apps are available from official sources outside of Play Store:

• Linux Deploy App: https://github.com/meefik/linuxdeploy/releases
• XSDL X Server : https://sourceforge.net/projects/libsdl-android/files/apk/XServer-XSDL/ via https://libsdl-android.sourceforge.io/
• (Octo4a linked is already correct.)