Add tools to Dev Tools page

[amarantha-k]

Capturing a request (from Discord) to add tools to the Dev Tools page.

Could we add these tools on https://xrpl.org/dev-tools.html?:

1. https://richardah.github.io/xrpl-keylet-tools/
2. https://richardah.github.io/xrpl-base58-tool/
3. https://github.com/RichardAH/xrpl-fetch-unl
4. https://github.com/RichardAH/xrpl-deserializer-c

5. https://richardah.github.io/xfl-tools/

[amarantha-k]

Along those lines, also include xrpl-client under libraries.

[jonathanlei]

I could add those to the page if those are categorized and have design input on the color and screenshots of the cards.

[wojake]

1. https://richardah.github.io/xrpl-keylet-tools/: Generate keylets for various XRPL on-ledger objects
2. https://richardah.github.io/xrpl-base58-tool: Encode or decode base58 content for the XRPL
3. https://github.com/RichardAH/xrpl-fetch-unl: Fetch and validate a validator list from a validator list site
4. https://github.com/RichardAH/xrpl-deserializer-c: Deserialize an XRPL serialized binary object
5. https://richardah.github.io/xfl-tools/: Construct or deconstruct XLS-17d (XFL) floating point values.

The tools above should be listed on Other, please consider renaming the tab to Miscellaneous Feel free to choose any design input on the color, thank you.