[FEATURE] Automate bumping versions after releases

[harshavamsi]

Is your feature request related to a problem?

Coming from opensearch-project/opensearch-clients#34. The version should be bumped each time a release is made so that builds happen for new changes with appropriate versioning.

What solution would you like?

Implement workflow similar to https://github.com/opensearch-project/OpenSearch/blob/main/.github/workflows/version.yml

[shyim]

I am not really sure if we need that. We have to just create a new Release at Github and it's done 😅

[dblock]

Where's the version stored in code? Is it?

[dblock]

So the version is not stored in the code, but should, I opened #182.

[dblock]

Here's what automation should produce: #190.

[saimedhi]

Here's what automation should produce: #190.

In the future, once we transition to generating client using templates, let's aim to modify the client version in util/template/client-class, rather than in src/OpenSearch/Client.php.