Filesystem update

This update adds filesystem support, as well as some general fixes, mostly with promises.

Detailed changelog:

remove unnececeary @NativeInit directives #9 (TopchetoEU)
implement simple permission matching #9 (TopchetoEU)
implement permissions #9 (TopchetoEU)
implement bulk of fs #9 (TopchetoEU)
implement memory and root fs #9 (TopchetoEU)
add fs declarations in lib.d.ts #9 (TopchetoEU)
add support for async iterators #9 (TopchetoEU)
add parse function to Filename #9 (TopchetoEU)
add toString, equals and hashCode overrides to wrappers and objects #9 (TopchetoEU)
add filesystem libs #9 (TopchetoEU)
add await function to promise #9 (TopchetoEU)
add utf8 encoding and decoding #9 (TopchetoEU)
properly implement filesystems #9 (TopchetoEU)

replace templates in Metadata class with placeholder data #9 (TopchetoEU)
errors now have the right prototype and name #9 (TopchetoEU)
remove double space in "Uncaught ..." #9 (TopchetoEU)
internal error when trying to use key of "undefined" #9 (TopchetoEU)
improve performance of typescript by caching separate declarations #9 (TopchetoEU)
handle native errors properly-ish #9 (TopchetoEU)
CodeFrame didnt't handle out of bounds jumps well #9 (TopchetoEU)
some improvements of compiled bytecode #9 (TopchetoEU)
functions now print their name when stringified #9 (TopchetoEU)
sorting with no comparator now works #9 (TopchetoEU)
parsing files won't modify last instruction to RET, instead will just append it #9 (TopchetoEU)
promise doesn't use microtasks in some cases #9 (TopchetoEU)
promise was sending macro tasks instead of micro #9 (TopchetoEU)
micro tasks not handled properly #9 (TopchetoEU)
incorrect declarations #9 (TopchetoEU)
debugger breakpoints not registered #9 (TopchetoEU)
faulty insufficient permissions error #9 (TopchetoEU)
make code java 11 compatible (TopchetoEU)