Add github webhook for deployv image integration

[antonag32]

Fixes #195

Github pipelines in Vauxoo projects create "Deployv" docker images which can be used instead of the big image in runbot. This is becoming the prefered way.

Therefore a controller has been added to listen for this events and mark the field 'deployv_image_built' as True once Github's pipeline for the build has been completed in a successful manner.

[antonag32]

Can you review @moylop260 and @luisg123v

[luisg123v]

Typo in description: maner -> manner

[antonag32]

@luisg123v I've made the requested changes