This is the kind that is used in Go (actually CGo) for exporting
functions. I think it's best to use //export instead of our custom
//go:export pragma, for consistency (they are equivalent in TinyGo).
Therefore I've updated all instances to the standard format (except for
two that are updated in https://github.com/tinygo-org/tinygo/pull/1024).
No smoke tests changed (when comparing the output hash), except for some
wasm tests that include DWARF debug info and tend to be flaky anyway.
The generated wasm is 575 bytes when compiled with -no-debug (and
works), which is a much better first experience for new users than
the 20KB+ added (atm) just from including fmt.
Adds another example showing the simple case
of executing main, adds a README explaining how
everything fits together and how to execute the compiled
code in the browser. Include a minimal webserver for
local testing.
