README: Add Communication section with Forum information

[Andersson007]

SUMMARY

Dear maintainers,
As a part of the Consolidating Ansible discussion platforms initiative, this PR adds the communication section template defined by the community to the README. Similar PRs are being raised across all included collections under the ansible-collection org for now.

• If you have your forum group and/or tags related to the collection, please update corresponding lines by suggesting changes to the PR.
• If the collection is not present on the Ansible forum yet, please check out the existing tags and groups - use what suits your collection. If there is no appropritate tag and group yet, please request one. Then update corresponding lines by suggesting changes to the PR.
• Presence in the forum will soon likely become a part of the Collection inclusion requirements.

ISSUE TYPE

• Docs Pull Request

COMPONENT NAME

README.md

[Andersson007]

The CI failures are unrelated to the PR, ready for review

[mamercad]

🚢

[Andersson007]

@mamercad hello, thanks for merging but: the following points in the PR had had to be addressed before merging:)

• Posts tagged with 'your tag': subscribe to participate in collection-related conversations.
• Refer to your forum group here if exists: by joining the team you will automatically get subscribed to the posts tagged with your group forum tag here.

But you can do it yourself in another PR, no problem