feat: add morgan types to work with typescript

[floross]

This pull request add types information to the morgan elastic package (@elastic/ecs-morgan-format)

[cla-checker-service[bot]]

❌ Author of the following commits did not sign a Contributor Agreement: 3716ad9d0473e7f6595e158c3fe410e1148d847d

Please, read and sign the above mentioned agreement if you want to contribute to this project

[apmmachine]

:grey_exclamation: Build Aborted

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• Start Time: 2022-05-03T13:37:50.455+0000

• Duration: 3 min 59 sec

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• Description: githubApiCall: The REST API call https://api.github.com/orgs/elastic/members/floross return the message : java.lang.Exception: httpRequest: Failure connecting to the service https://api.github.com/orgs/elastic/members/floross : httpRequest: Failure connecting to the service https://api.github.com/orgs/elastic/members/floross : Code: 404Error: {"message":"User does not exist or is not a member of the organization","documentation_url":"https://docs.github.com/rest/reference/orgs#check-organization-membership-for-a-user"}

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[trentm]

Hi @floross. Thanks very much for your PR! I'm sorry that I didn't get back to you way back when you submitted this. Are you able to sign our CLA (at https://www.elastic.co/contributor-agreement)? Then I'll be able to get this in this week.