pi-wifi-connect

A solution to enable your device to connect to an external
wifi AP using a temporary wifi AP the device puts up and then
opening its web portal. Note that wifi-connect daemon assumes
control of device network management and other management solutions
should not be simultaneously used.

Please find the source of this snap at: https://code.launchpad.net/~snappy-hwe-team/snappy-hwe-snaps/+git/wifi-connect