Create devcontainer.json

[Abdulhalem-M-Elnahas]

AB#50486968

[learn-build-service-prod[bot]]

Learn Build status updates of commit ccc8448:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
.devcontainer/devcontainer.json	:white_check_mark:Succeeded

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[Reezaali]

Hi, it looks like this PR might have been a mistake. Feel free to comment if I am misunderstanding the intent. I'll proceed to close it now.