[eventsource] SSE Client (#3074)

* fix flush

* remove logs

* add HTTP/1.1 eventsource

* fix parse spec

* multiple data in one event

* get lastEventId for reconnection

* fix parsing add reconnect

* fix reconnection retry

* add retry option

* move eventsource to builtins

* remove duplicate interface on globals.d.ts

* move test to TS

* fmt

* allow no Content-Length or Transfer Encoding

* udpate builtins

* hardcoded

* merge

* revert /src/out

* updated

* Update .gitignore

* Make the tests fail

* Cleanup EventSource getter

* fixup

* fixup TS

* fmt

* update builtins

* fix tests

* Clear existing timeouts

* Add `ref` and `unref` methods

* Use `super` to make prototype pollution slightly harder

* Reduce test timeout

* Regenerate builtins

* prettier + ref/unref

* Outdated

* forgot to commit this

---------

Co-authored-by: Jarred Sumner <709451+Jarred-Sumner@users.noreply.github.com>

.gitignore

@@ -121,3 +121,5 @@ cold-jsc-start
 cold-jsc-start.d
 
 /test.ts
+
+src/js/out/modules_dev