Added flags.action filter variable (#5397)

Co-authored-by: Rasmus Karlsson <rasmus.karlsson@pajlada.com>

src/controllers/filters/lang/Filter.cpp

@@ -93,6 +93,7 @@ ContextMap buildContextMap(const MessagePtr &m, chatterino::Channel *channel)
         {"channel.name", m->channelName},
         {"channel.watching", watching},
 
+        {"flags.action", m->flags.has(MessageFlag::Action)},
         {"flags.highlighted", m->flags.has(MessageFlag::Highlighted)},
         {"flags.points_redeemed", m->flags.has(MessageFlag::RedeemedHighlight)},
         {"flags.sub_message", m->flags.has(MessageFlag::Subscription)},

src/controllers/filters/lang/Filter.hpp

@@ -32,6 +32,7 @@ static const QMap<QString, Type> MESSAGE_TYPING_CONTEXT = {
     {"channel.name", Type::String},
     {"channel.watching", Type::Bool},
     {"channel.live", Type::Bool},
+    {"flags.action", Type::Bool},
     {"flags.highlighted", Type::Bool},
     {"flags.points_redeemed", Type::Bool},
     {"flags.sub_message", Type::Bool},

src/controllers/filters/lang/Tokenizer.hpp

@@ -18,6 +18,7 @@ static const QMap<QString, QString> validIdentifiersMap = {
     {"channel.name", "channel name"},
     {"channel.watching", "/watching channel?"},
     {"channel.live", "channel live?"},
+    {"flags.action", "action/me message?"},
     {"flags.highlighted", "highlighted?"},
     {"flags.points_redeemed", "redeemed points?"},
     {"flags.sub_message", "sub/resub message?"},