Update new integration template

[iliakur]

What does this PR do?

Updates template for creating a new integration.

Motivation

Incorporating feedback from partners while staying compatible with integrations-core practices.

Meant to supercede https://github.com/DataDog/integrations-core/pull/17317

Additional Notes

Review checklist (to be filled by reviewers)

• [ ] Feature or bugfix MUST have appropriate tests (unit, integration, e2e)
• [ ] Changelog entries must be created for modifications to shipped code
• [ ] Add the qa/skip-qa label if the PR doesn't need to be tested during QA.
• [ ] If you need to backport this PR to another branch, you can add the backport/<branch-name> label to the PR and it will automatically open a backport PR once this one is merged

[github-actions[bot]]

Test Results

  4 files    4 suites   3m 39s :stopwatch: 391 tests 390 :white_check_mark:  0 :zzz: 1 :x: 882 runs  847 :white_check_mark: 33 :zzz: 2 :x:

For more details on these failures, see this check.

Results for commit e8ae1f27.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 89.17%. Comparing base (8cf3d23) to head (27c9420). Report is 26 commits behind head on master.

Additional details and impacted files

Flag	Coverage Δ
activemq	?
cassandra	?
datadog_checks_dev	77.38% <ø> (+0.07%)	:arrow_up:
hive	?
hivemq	?
hudi	?
ignite	?
jboss_wildfly	?
kafka	?
presto	?
solr	?

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