[NEW FEATURE] Add enter "Other" feature for some of the ENUMERATION LISTS

[strambc]

Is your feature request related to a problem? Please describe.
Example use case:
Microscope Manufacturer names
Currently, it is a STRING with free entry.

For better standardization, we might want to have a CONTROLLED VOCABULARY: Nikon, Leica Microsystems, Carl Zeiss Microscopy, Olympus, etc. (similar to the https://purl.humanatlas.io/vocab/hravs#HRAVS_1000391).
The problem is that the list of names might change.

Describe the solution you'd like
Insert a feature where the user can select "Other" and add a new name. The App would then send an email trigger to the list curator to enter a new term into the controlled list. For example, when values appear often, they are added to ENUM in the model.

Additional context
This was raised strongly by users at the 2021-11-17 MMA focus group meeting (https://www.dropbox.com/s/mlym1xn77t5q74n/2021-11-17_MMA%20GUI%20usability%20feedback_zoom_0.mp4?dl=0)

[strambc]

Related to #437

[strambc]

This could be solved at the MODEL LEVEL WITH ALL ENUM HAVING OTHER and NOT AVAILABLE by default

[strambc]

Keep a vocabulary in the APP
Difficult to maintain and expand it