Implement a parser for ircv3 and add unit tests to it.
This change got pretty big so I didn't implement unescapping tags yet. I did
however put the unit tests in for escaped tags, but they are currently #if 0'd
out.
The unit tests are based on the msg-split test cases from https://github.com/ircdocs/parser-tests/blob/master/tests/msg-split.yaml
Testing Done:
Ran the unit tests.
Bugs closed: PIDGIN-17585
Reviewed at https://reviews.imfreedom.org/r/1874/
# SOME DESCRIPTIVE TITLE.
# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
# This file is distributed under the same license as the PACKAGE package.
#
# Translators:
# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER, 2006
msgid""
msgstr""
"Project-Id-Version: Pidgin\n"
"Report-Msgid-Bugs-To: \n"
"POT-Creation-Date: 2021-01-12 00:20-0600\n"
"PO-Revision-Date: 2017-09-19 19:20+0000\n"
"Last-Translator: Richard Laager <rlaager@wiktel.com>\n"