Add some Billing blocks

[ghsteff]

PR Checklist

Please check if your PR fulfills the following requirements:

• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[ ] Bugfix
[x] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Other... Please describe:

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

This adds 2 Billing blocks

Screen.Recording.2024-05-02.at.3.35.20.PM.mov

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[amcdnl]

should update these imports ( in the MDX ) to be from reablocks so people can copy paste easier.

[ghsteff]

right gotcha

[amcdnl]

Also need to add to the main intro

[amcdnl]

few minor tweaks, otherwise awesome stuff

Addressed feedback