Final gsm eric

[Thiemann96]

Added GSM to the API. This includes :

• Accept new "gsm" field at registration which contains IMSI and secret code. This is needed for registration at tingg and will be handled by the new microadapter at tingg.opensensemap.org.
• Updated the api models so that "homeV2GSM" is a valid model now
• Updated integrations field so that it can include the GSM object
• Published new npm version (0.0.32) of the api models and bumped it in the package.json of the API

How Has This Been Tested?

All changes have been deployed on the testing domain. Changes can be tried out on testing.opensensemap.org

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

[X] My change requires a change to the documentation.

• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.

[ubergesundheit]

Unless the project wants to switch to npm, please remove the package-lock.json file and make sure yarn.lock is up to date