Add lastModifiedDate from version to the object response

[jatindersingh93]

• Adding 'lastModifiedDate' to the search result, which can replace 'updated date' in the object list view.

Description

Types of changes

Checklist

• I have read the CONTRIBUTING doc
• I have checked that unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

Further comments

[github-actions]

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[TimCsaky]

we can also include lastodifiedDate in the response from createObject and updateObject.
in controllers/object.js.. for updateObjecthere and for createObject here add this line:
object.lastModifiedDate = version.lastModifiedDate

[norrisng-bc]

common-object-management-service/app/src/docs/v1.api-spec.yaml

Lines 2410 to 2414 in fd4d5c5

	updatedAt:
	type: string
	format: date-time
	description: Time when this record was last updated
	example: "2022-03-11T23:19:16.343Z"

I'd probably also clarify in the description that it's referring to a COMS record - specifically, operations done via COMS as well as when an external change was picked up during a sync.