Make QMK Configurator work with e7-v1 (#5007)

Make QMK Configurator work with e7-v1 (#5007)

* Make QMK Configurator work with e7-v1

This adds the missing info.json file for the e7-v1 keyboard which I
forgot to add to the original PR.
This allows to see the correct layout in QMK Configurator.

* Fix the ISO layout

The ISO layout has one extra key (hash/tilde) on row 3 right before
the enter key.

The e7-v1 PCB has this key wired at the same switch as the ANSI
backslash (since this switch is not used in ISO).