feat: update credit class page

[flagrede]

Description

Closes: regen-network/rnd-dev-team#1721

Added the following items to the credit class page:

• credit type
• credit offset generation methods
• credit class tooltip

Also, refactor some old queries to react-query.

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How to test

1. Single offset method: https://deploy-preview-1968--regen-registry.netlify.app/credit-classes/C02
2. Several offset methods: https://deploy-preview-1968--regen-registry.netlify.app/credit-classes/C01

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[flagrede]

@erikalogie you can test the credit class page update (type, offset methods, tooltip). I've put the links in the description.

[erikalogie]

@erikalogie you can test the credit class page update (type, offset methods, tooltip). I've put the links in the description.

LGTM!

[ryanchristo]

Code looks good to me.