Add customAttributes to getDevices?matchTerm

[pintify]

Is your feature request related to a problem? Please describe.
The customAttributes are sometimes much more useful than the default fields already available but in the REST API there is no way to filter the getDevices request through them.

Describe the solution you'd like
To include the customAttributes in the matchTerm search.

Describe alternatives you've considered
Include specific filters for the customAttributes as requestParam.