Support Organizations app as source of Organizations in Agreements

Value for user:
To avoid managing lists of organisations in two or more places, a user can use Organizations that are managed via the Organizations app when Adding an Organization to an Agreement

Roles and restrictions:
As existing 'add organization' function in agreements app

Workflow / UI expectations:

• From existing option to "Add organization" {{ Agreement (edit) -> Organizations}}, when Organizations app is installed, when the user adds an organization, they can search through Organizations in the Organizations app and select the one they wish to be able to add
• The Organization lookup will be done using ui-plugin-find-organizations
• Organization will display in {{ Agreement (preview) -> Organizations }}
• Where an Organization has been added from the Organization app, the name of the Organization will link to the display of the Organization in the Organization app
• See https://issues.folio.org/browse/UXPROD-1681 for indicative wireframes, but note that these wireframes are based on a conversion to using Cards to displaying organisations, which is not required to complete this story (ERM-220)

Business rules & constraints:

• No additional business rules and constraints beyond the current funtionality to add organizations to agreements