Breaking changes for stacks.js

[janniks]

more steps to come 😉

• #1655
• #1703
• allow use of Network or Name everywhere possible
• allow Clarity values to also use number/string/bigint
• refactor to use asset-info string everywhere possible, refactor to contract-address-id strings (.) (::)
  • rename NftString to Asset, since it's the same for FT contracts, update the builders as well
• prefer string addresses everywhere (maybe doesn't need to be message type)
• make all methods use new network obj, instead of chain-id etc.
• consolidate capitalization (camel case vs STX/ID)
• remove structured signature from message types (and other non-needed wrapper types)

non-breaking (extra credit)

• add pox tuple address helper to the Cl. namespace
• add missing tx creation checks (e.g. contract name too long)
• add detectable (control flowable) errors everywhere
  e.g. FetchError for anything that failed during fetch
  errors should still just be a string (and maybe a .originalError)
• clean imports everywhere
• get rid of comments using [[]] syntax
• clean up manual re-exports and always export where defined