Add stitionai/devika to opensource projects

[123vivekr]

Please confirm this pull request meets the following requirements:

• I followed the contributing guidelines: https://github.com/github/india/blob/main/CONTRIBUTING.md.

Which change are you proposing?

• Adding/updating open source project/s
• Adding/updating maintainer/s

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Adding/updating open source project/s

• The project was built in or receives significant contributions from India
• The project has at least 100 stargazers

Why should this open source project be featured?

Devika is built in Kerala, India. It is an open source version of Devin and aims to beat Devin in the SWE bench. It is currently being used by technical as well as non-technical folks garnering huge interest due to its usefulness and open nature. This is a huge milestone in the Indian AI-augmented tooling ecosystem and would be valuable to showcase it in this website.

Adding/updating maintainer/s

• Maintainer's location on their GitHub profile indicates as India
• Maintainer has approved this PR to be included on the website

What open source project/s does the individual maintain?

Please replace this line with GitHub URLs to projects that the individual/s maintains

Something that does not neatly fit into the binary options above

• My suggested edits are not about an existing page, or at least not a single one

Please replace this line with an explanation of your proposed changes.

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Please note: we will close your PR without comment if you do not check the boxes above and provide ALL requested information.