1975: First commit with release docs. Need direction and review

[chanduvkp]

🛑 Important:

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Purpose of this PR

This is to stream line release process for spark-operator

Proposed changes:

• Added release directory and release.md file in it

Change Category

Indicate the type of change by marking the applicable boxes:

• Feature (non-breaking change which adds functionality)
• Documentation update

Rationale

Need direction on building the release process for spark operator

Checklist

Before submitting your PR, please review the following:

• I have conducted a self-review of my own code.
• I have updated documentation accordingly.
• I have added tests that prove my changes are effective or that my feature works.
• Existing unit tests pass locally with my changes.

Additional Notes

None

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[chanduvkp]

Thank you @ChenYi015 and @peter-mcclonski for the review. Updated the README.md file with the feedback

[ChenYi015]

@chanduvkp Thanks for the effort to add release docs! Since the release workflow and docs have already been updated, will close this as it has been out of date.