Creating a Datasource just got (much) easier

<p>Limit upper GX version to &lt;0.16.0.</p> <p>Reopening <a href="https://github.com/OpenLineage/OpenLineage/pull/2024">#2024</a> accidentally closed by me.</p> <p>Kudos to <a href="https://github.com/ivanstillfront">@ivanstillfront</a>.</p> <p><strong>Checklist</strong></p> <p>☑︎ You've <a href="https://github.com/OpenLineage/OpenLineage/blob/main/why-the-dco.md">signed-off</a> your work ☑︎ Your pull request title follows our <a href="https://github.com/OpenLineage/OpenLineage/blob/main/CONTRIBUTING.md#creating-pull-requests">guidelines</a> ☑︎ Your changes are accompanied by tests (<em>if relevant</em>) ☑︎ Your change contains a <a href="https://kurtisnusbaum.medium.com/stacked-diffs-keeping-phabricator-diffs-small-d9964f4dcfa6">small diff</a> and is self-contained ☐ You've updated any relevant documentation (<em>if relevant</em>) ☐ Your comment includes a one-liner for the changelog about the specific purpose of the change (<em>if necessary</em>) ☐ You've versioned the core OpenLineage model or facets according to <a href="https://docs.snowplowanalytics.com/docs/pipeline-components-and-applications/iglu/common-architecture/schemaver">SchemaVer</a> (<em>if relevant</em>) ☐ You've added a <a href="https://github.com/OpenLineage/OpenLineage/tree/main/.github/header_templates.md">header</a> to source files (<em>if relevant</em>)</p> <hr /> <p>SPDX-License-Identifier: Apache-2.0<br /> Copyright 2018-2023 contributors to the OpenLineage project</p>