[Hacktoberfest] Add Swag Opportunity for EMQ

[BandhiyaHardik]

Wild swag opportunity appeared!

• [x] I've checked that this isn't a duplicate issue.

Q. Which company offers it?
A. : EMQ

Q. Where have you seen the announcement (URL)?
A. : https://www.emqx.com/en/blog/join-hacktoberfest-2023-with-emq-community

Q. What kind of swag (clothing, stickers, ...)?
A. : clothing

Q. Have you received swag from this?
A. : No

Q. How long did it take?
A. : N/A

Q. Does it ship worldwide?
A. : Yes

contributors who have had 2 or more pull requests accepted in the eKuiper or NanoMQ projects will receive a custom EMQ t-shirt!

• [x] I've checked that the promotion is legit.
• [x] I've checked that it's still available to the public.

[BandhiyaHardik]

i would like to work on this issue

[aslafy-z]

done with https://github.com/swapagarwal/swag-for-dev/pull/1161