Add and map "Remote Help" boolean field

Related GALILEO Search issue

The DOOR data contains a field show_remote_help that we need to turn into a boolean field on the Resource. I think (check with @bmb) that any value in this field should be interpreted as true.

• Migration to add boolean show_remote_help field to Resource
• ProtoInstitutionResource updates to set value
• Resource form addition of field toggle
• Controller strong params updated
• Display field on Resource show page
• [*] (Separate issue) Validate that vendor credentials are present if show_remote_help is true (both Resource and Allocation have credentials - we may need to validate all Allocations in this case? this may need to be a separate issue. NOTE it looks like all of these remote_help records are GLRI so the credentials will be on the Resource)

After this work is complete, we can (in a separate issue) index this value, and if true, the credential information, and we can work out the display/message/link in GALILEO Search.