Make library compatible with ESM and browsers

[mrjvs]

changes:

• Updated compiler to tsup and add linting GH workflow (the same setup that BOSS and juxt uses)
• Set up compiler to compile to both esm and cjs. Using esm as a base
• Make it easier to run on the client:
  • Remove nodejs dependencies where possible (removed assert)
  • Do an explicit import for buffer, so polyfilling tools can recognize the dependency on Buffer (which doesnt exist on browser - in the long run we would probably want to use UInt8Array or ArrayBuffers, since those are available on both platforms)
  • Use crypto-js for md5, because its browser compatible. This will also shrink the bundle size when bundling for browser
  • (bitbuffer dependency is fine, it's written entirely in native JS)
• Moved examples into an examples folder, otherwise it gets compiled and published with the library code.
• Increased version number, so it can immediately be deployed as an update

There are no breaking changes for library users.

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This will resolve bundling errors we are encountering with the nuxt refactor: PretendoNetwork/website#411

[limesdotpink]

🔥🔥🔥🔥🔥🔥

Thanks jvs!

[jonbarrow]

LGTM 👍

[limesdotpink]

let's get this merged!