Build a New Handbook Page for IT Agility Director Interview

Why is this change being made?

Create a new Handbook page per https://gitlab.com/gitlab-com/sales-team/field-operations/enablement/-/issues/232.

@jbrennan1 - Thanks in advance for merging!

Does this MR meet the acceptance criteria?

Assign to DRI

• Did you assign this change to the correct DRI of the page or information you are changing?

Conformity

• Added description to this MR explaining the reasons for the proposed change, per say-why-not-just-what

Closes #7219 (closed)