Add Dependabot to maintain packages

[hoangmirs]

Why

• Add dependabot.yml to maintain packages in the template/generated project.
• https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file

Who Benefits?

Developers

[hoangmirs]

As we're changing to use monorepo to manage packages, but dependabot does not work properly with monorepo. So this issue might be pending.
dependabot/dependabot-core#4993

[carryall]

As we're changing to use monorepo to manage packages, but dependabot does not work properly with monorepo. So this issue might be pending. dependabot/dependabot-core#4993

Oh, I didn't know there was the issue, let's mark this as pending for now until we have a better solution for the issue 🙇🏼

[Amit-Juneja25]

The issue mentioned here: dependabot/dependabot-core#4993 seems to have been resolved. I can give it a try if you guys still have this in your radar