feat: add calculator to pricing page

[bryanoltman]

Adds a pricing calculator to the pricing page:

Screen.Recording.2024-11-21.at.4.24.17.PM.mov

[eseidel]

Feedback:

1. You might want sliders to only stop at the few chosen stops (rather than continous).
2. In general language should show these as "at most" costs rather than "it will cost this".
3. If they're patching more than 4 times a month, we might want to show a line saying how costs go down as patch frequency goes up, as we only charge you for isntalled patches, and we won't install patches while users are not using the app.

[bryanoltman]

As discussed on VC, landing and applying the feedback above in future PRs

[eseidel]

Feedback after trying:

1. Remove "Use our pricing calculator to find out."
2. "How many monthly active users do you have?" -> "Approximate Monthly Active Users"
3. "Our Pro plan" -> "Pro" or "The Pro Plan"?
4. "We recommend the" -> "Use the" or "Try the"? to be shorter?
5. "Sign up here." should be its own separate line?
6. Should "*Prices are quoted in USD and sold as "patch installs per month", reflecting successful installs of a given patch. For example, 1 patch pushed to 10 devices is 10 installs. 2 patches pushed to 5 devices is also 10 installs." be above the calculator?