fix: runtime context type support in zencode-exec

feat: use context arg to sideload lua with keyword

context comes handy for debugging and testing to pass lua sideload without
changing the external api, now parses first line about its function and then
executes. In future will close this functionality on RELEASE builds.

fix: use [email protected] in js release job

fix(golang): stream zenroom stdin payload

docs: update native maintenance notes

test(js): relax unknown-variable line assertion

Merge pull request #1172 from dyne/feat/longfellow_info

feat(zkcc): add method to get circuit metadata

Merge pull request #1171 from dyne/fix/zencode-parser-security

Fix/zencode parser security

Merge pull request #1170 from dyne/fix/json-decode

fix: json decoder fixes for utf-16 corner cases

fix(go): start the process before filling the stdin pipe