Adding MASS Travel Solution to Power Platform Samples

[hisandeepangara]

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Put an x in all the items that apply ([x], without spaces), make notes next to any that haven't been addressed.

• Bug fix?
• New sample?
• Related issues: fixes #X, partially #Y, mentioned in #Z
• Needs API permissions?
• Has other prerequisites? (E.g. requires a list, document library, etc.)

What's in this Pull Request?

This PR contains addition of a new sample "MASS Travel Solution", which is a submission for Powerful Devs Hack Together contest and awarded with Best in Pages. This solution could streamline communication, provide real-time updates, and enhance collaboration between travel companies and agencies, ultimately improving customer satisfaction and business outcomes.

Checklist

This checklist is mostly useful as a reminder of small things that can easily be forgotten – it is meant as a helpful tool rather than hoops to jump through.

Put an x in all the items that apply ([x], no spaces), make notes next to any that haven't been addressed.

• My pull request affects only ONE sample.
• I have updated the README file.
• My README has at least one static high-resolution screenshot (i.e. not a GIF)
• My README contains complete setup instructions, including pre-requisites and permissions required

[Katerina-Chernevskaya]

Hi @hisandeepangara ,

Thank you for your submission! We value your time and contribution.
To move forward with the review and merging of your pull request, we kindly request that you update your PR in accordance with the Contribution Guidelines. Please ensure that the README file is updated following the provided template, and add the source code as instructed.

Additionally, make sure to update your branch to reflect the latest changes from the main branch.

Thank you!

Regards,
Katerina Ch.