provide support for manually creating backtrace of an error

[yskopets]

Context

• Rust doesn't support backtraces on wasm32 (neither is backtrace package)

Expected

• find a way for user to manually attach location to an error
  • use file!() and line!() macros to get the location where an error is created
  • probably, use an error handling package like anyhow that allows to associate a free-form context with an error