Update SK Settings sidebar

[JohnPixle]

This is regarding the addition of the SK PRO UPGRADE panel at the settings.

🌀 Here is the FIGMA file.. Please follow the current default admin styles, not the figma ones.

1. Upgrade to Pro panel

⚠️ This must exist only when SK PRO is not installed in the site.

2. Update the existing panel

There are also some suggested tweaks in the existing panel, mainly for reducing the height.

[mauryaratan]

@JohnPixle I don't like distributing the coupon code publicly like that bro.

What if we collect users' name + email address here? And send them a personalized code? This has a few benefits:

• No one scheme into publicly sharing the coupon code aka making a way around to get a discount code
• We can add them to a specific AC list Potential Customers when they request a coupon code
• If a user doesn't purchase or changes their mind, we'll know and do something with that.
• And since upon purchase, a user is added to the Pro customers list. We can run a workflow that goes: If in "Potential Customers" and didn't purchase within 48 hours, send an automated reminder.
• To make this more effective, we can remove the user from Potential Customers list once purchased.

Let me know your thoughts!

[JohnPixle]

@mauryaratan Ok, we can do it as you say. Updated the figma.