Update: Bump esbuild and add support for new import path format

[doteric]

Generally I would like to seek a possible replacement for funpack that would fulfill the following requirements:

• Simple definition of functions
• Resolving exact dependency versions and building a package.json that represents actual function dependencies
• Easy and fast to use without any other external requirements

If I don't find anything neat then it might be worth improving funpack for wider support and potential performance improvements.