[tutorial] Add ord tutorial

[HenokB]

Description of the tutorial
... Python built-in function ord()

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[Prakhar9450]

Please assign me this issue

[sabderemane]

You're assigned now @Prakhar9450 :)

[sabderemane]

Any update on this issue @Prakhar9450 ?

[funbeedev]

Still open for anyone to write a tutorial!