Suggest rename to fuel-ts

[SilentCicero]

I think this repository / module should be renamed fuel-ts. Is there any reason why we went with "fuels-ts"?

[digorithm]

IIRC, @adlerjohn asked me to rename sway-rs to fuels-rs, which is being reflected here as well (ts instead of rs). And I believe he suggested that because we're getting a lot of inspiration from ethers.js (https://docs.ethers.io/v5/) and ethers-rs (https://github.com/gakonst/ethers-rs), which does the s at the end.

I'm okay with either fuel-ts or fuels-ts, but we gotta make sure to rename all places referring to these pkgs.

[adlerjohn]

My rationale was to take inspiration from ethers as @digorithm pointed out.

[adlerjohn]

NPM organization set to fuel-ts, and actually SDK set to fuels.