Create page for Interest Group contact form

We would like to create a new page:

Suggested URL: https://www.eclipse.org/collaborations/interest-groups/contact

Styled like: https://www.eclipse.org/membership/join-us/

Content

Contact us about your organization joining an Eclipse Interest Group Collaboration

As per the Interest Group Process, organizations must first be an Eclipse Foundation Member in order to join an Eclipse Interest Group and must also have a Member Committer and Contributor Agreement executed.

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<script>
  hbspt.forms.create({
    region: "na1",
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    formId: "a0f7f78b-46f5-459b-ab62-946beae588c3"
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</script>

CC @scorbett