added _id to formioForm type

[ZenMasterJacob20011]

Description

What changed?

Add _id to the formioForm type

Why have you chosen this solution?

forms should have a property of _id on them. This type should reflect that

Breaking Changes / Backwards Compatibility

N/A

Dependencies

N/A

How has this PR been tested?

Manually

Checklist:

• I have completed the above PR template
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation (if applicable)
• My changes generate no new warnings
• My changes include tests that prove my fix is effective (or that my feature works as intended)
• New and existing unit/integration tests pass locally with my changes
• Any dependent changes have corresponding PRs that are listed above