Limit observations to ACCEPTED, or ENGINEERING or CALIBRATION programs

[toddburnside]

A similar WHERE should be used in the query in Observation.ts in navigate-ui.

Note, there is also an observationsByWorkflowState which would allow filtering by observation workflow state in addition to the WHERE used here. But, it is only available for service users, which I think means it can't be used here?

UPDATE: Rob made observationsByWorkflowState available to staff users. @hugo-vrijswijk is creating a PR for navigate-ui using that query. The exact query should be discussed in that PR and I will duplicate it here.

Hugo's PR: gemini-hlsw/navigate-ui#403

[rpiaggio]

Now that the observationsByWorkflowState query is working in the ODB, we use that to get the candidate observations, with the same filters used in navigate.

Said query is only available for the STAFF role, so now the role is enforced in observe, even in dev.

Finally, there is a refactor regarding the model extensions: now the extensions are all in their own file, separate from package.

[toddburnside]

LGTM

[rpiaggio]

LGTM :D