PubSub system (#346)

* Add websocketpp dependency

* Initial pubsub commit

Renamed selection min and max variables to selectionMin and selectionMax
to bypass windows min/max macros being stupid.

TwitchAccount is now initialized with its User ID. It cannot be changed
after it has been initialized.

* Update openssl folder

* Update installation instructions

* Split up websocketpp dependency to its own code only and openssl.pri

* Add missing include to asio steady_timer

* Update dependencies for linux

chatterino.pro

@@ -34,6 +34,8 @@ include(dependencies/humanize.pri)
 include(dependencies/fmt.pri)
 DEFINES += IRC_NAMESPACE=Communi
 include(dependencies/libcommuni.pri)
+include(dependencies/websocketpp.pri)
+include(dependencies/openssl.pri)
 include(dependencies/boost.pri)
 
 # Optional feature: QtWebEngine
@@ -172,7 +174,11 @@ SOURCES += \
     src/widgets/helper/signallabel.cpp \
     src/widgets/helper/debugpopup.cpp \
     src/util/debugcount.cpp \
-    src/singletons/nativemessagingmanager.cpp
+    src/singletons/nativemessagingmanager.cpp \
+    src/singletons/pubsubmanager.cpp \
+    src/util/rapidjson-helpers.cpp \
+    src/singletons/helper/pubsubhelpers.cpp \
+    src/singletons/helper/pubsubactions.cpp
 
 HEADERS  += \
     src/precompiled_header.hpp \
@@ -289,7 +295,11 @@ HEADERS  += \
     src/widgets/helper/debugpopup.hpp \
     src/version.hpp \
     src/singletons/settingsmanager.hpp \
-    src/singletons/nativemessagingmanager.hpp
+    src/singletons/nativemessagingmanager.hpp \
+    src/singletons/pubsubmanager.hpp \
+    src/util/rapidjson-helpers.hpp \
+    src/singletons/helper/pubsubhelpers.hpp \
+    src/singletons/helper/pubsubactions.hpp
 
 RESOURCES += \
     resources/resources.qrc