feat: reduce RPC api surface area; remove subcommands that could be options/args

### Checklist

- [X] My issue is specific & actionable.
- [X] I am not suggesting a protocol enhancement.
- [X] I have searched on the [issue tracker](https://github.com/ipfs/kubo/issues?q=is%3Aissue) for my issue.

### Description

in Kubo RPC client, there was a minor discussion in a PR to have the client API match the RPC endpoints, but that some of the endpoints should be removed and instead be passed as parameters (similar to CLI):

- https://docs.ipfs.tech/reference/kubo/rpc/#api-v0-bitswap-wantlist should allow passing peer to wantlist
- https://docs.ipfs.tech/reference/kubo/rpc/#api-v0-bootstrap-add-default should just be /add with a default flag.
- https://docs.ipfs.tech/reference/kubo/rpc/#api-v0-bootstrap-rm-all should be /bootstrap/rm with an all option

See PR discussions:
* https://github.com/ipfs/js-kubo-rpc-client/pull/83#discussion_r1050108696
* https://github.com/ipfs/js-kubo-rpc-client/pull/83#discussion_r1048520906
* https://github.com/ipfs/js-kubo-rpc-client/pull/83#discussion_r1048523514