Added Poster Documentation

[harshkhandeparkar]

Notes:

• Read .github/CONTRIBUTING.md before creating the Pull Request. This is a MUST.
• KOSS Documentation is public. Make sure you are not adding any information which should remain private.

Write path(s) which will be affected by this Pull Request. Example:

• /community/posters.md

Justify your changes or addition.

• Added guidelines for poster sizes, design, printing, and pasting.
• This would increase consistency in design and prevent any challenges faced during poster printing or placing during an event.

Will sharing this with just the current members serve our purpose? For example, how you plan to conduct an event next week is a private affair. But, how you generally do the event, should be documented.

[proffapt]

arghh, it's a draft, toh review par tab hi lagao na jab ready hojaye ¯_(ツ)_/¯

[harshkhandeparkar]

arghh, it's a draft, toh review par tab hi lagao na jab ready hojaye ¯(ツ)/¯

It was ready for review but not for merging :)

[harshkhandeparkar]

Also mention the number when the target audience is just freshers, and when it is NOT JUST freshers

Bhai number abhi tak daalna baaki hai. Distribution decide karna padega. Git workshop ke baad dekhte hain.

[proffapt]

Shall I merge?

[harshkhandeparkar]

Shall I merge?

Please do :pray: Thanks!