Added support for pylock.toml

[dibyajyoti-mandal]

Added feature #4638

Tasks

• Reviewed contribution guidelines
• PR is descriptively titled 📑 and links the original issue above 🔗
• Tests pass -- look for a green checkbox ✔️ a few minutes after opening your PR
  Run tests locally to check for errors.
• Commits are in uniquely-named feature branch and has no merge conflicts 📁
• Updated documentation pages (if applicable)
• Updated CHANGELOG.rst (if applicable)

Signed-off-by: Dibyajyoti Mandal [email protected]

[dibyajyoti-mandal]

hi @AyanSinhaMahapatra I think this is ready to be reviewed. would appreciate your feedback