Add information on Quantum Wednesday

[nathanshammah]

Add information on Quantum Wednesday, on the Events page at https://unitary.fund/talks.html. This could include:

• Link to the Quantum Wednesday Repo
• A brief explanation of Quantum Wednesday (e.g., from the Readme of the repo)
• Possibly, an image of the Quantum Wednesday banner Given the frequency and recent occurrence of Quantum Wednesdays, I would highlight them before Quantum Software Talks, at least until QST are revived.

[nathanshammah]

Now included at https://unitary.fund/community/events/.