* feat: add support for node / preloads in subframes
This feature has delibrately been built / implemented in such a way
that it has minimum impact on existing apps / code-paths.
Without enabling the new "nodeSupportInSubFrames" option basically none of this
new code will be hit.
The things that I believe need extra scrutiny are:
* Introduction of `event.reply` for IPC events and usage of `event.reply` instead of `event.sender.send()`
* Usage of `node::FreeEnvironment(env)` when the new option is enabled in order to avoid memory leaks. I have tested this quite a bit and haven't managed to cause a crash but it is still feature flagged behind the "nodeSupportInSubFrames" flag to avoid potential impact.
Closes#10569Closes#10401Closes#11868Closes#12505Closes#14035
* feat: add support preloads in subframes for sandboxed renderers
* spec: add tests for new nodeSupportInSubFrames option
* spec: fix specs for .reply and ._replyInternal for internal messages
* chore: revert change to use flag instead of environment set size
* chore: clean up subframe impl
* chore: apply suggestions from code review
Co-Authored-By: MarshallOfSound <samuel.r.attard@gmail.com>
* chore: clean up reply usage
* chore: fix TS docs generation
* chore: cleanup after rebase
* chore: rename wrap to add in event fns
