Improvements to Message Search (#1237)

* Ran clang-format

* Implement user-specific search in message history

This functionality was originally requested in #1236.

This commit changes the SearchPopup::performSearch method so that only
messages from specific users can be shown.

In order to filter for a specific user, enter their username with a
leading '@' in the search popup. You can also add an additional search
phrase which will also be considered in the search.

* Naive implementation for "from:" tags

Rebase later?

* Cleverer (?) version using Predicates

Commit adds two POC predicates: one for the author of messages, and one
for substring search in messages.

Problems/TODOs:
* Best way to register new predicates?
* Clean up tags (e.g. "from:") or not?
* Test combinations of different predicates

* Add a predicate to check for links in messages

* Remove a dumb TODO

* Rewrite SearchPopup::performSearch to be cleaner

* Ran clang-format on all files

* Remove TODO I missed earlier

* Forgot to run clang-format

peepoSadDank

* Re-use {}-initialization

Was accidentally removed when fixing earlier merge conflict.

* Does this fix line endings?

No diffs are shown locally, hopefully Git doesn't lie to me.

* Rename "predicates" directory to "search"

Resolving one conversation in the review of #1237.

* Use LinkParser in LinkPredicate

Resolving a conversation in the review of #1237.

* Predicates: Use unique_ptr instead of shared_ptr

Resolves a conversation in the review of #1237.

* Refactor of SearchPopup and AuthorPredicate

Resolving some points from the review in #1237.

* Moved parsing of comma-seperated values into AuthorPredicate
  constructor.
* Rewrite SearchPopup::parsePredicates as suggested.
* Deleted now redundant methods in SearchPopup.

* MessagePredicate::appliesTo now takes a Message&

... instead of a MessagePtr.

This resolves a conversation in the review of #1237.

* Run clang-format on two files I missed

* AuthorPredicate: Check for displayName & loginName

Resolving conversation on #1237.

src/providers/twitch/TwitchAccount.cpp

@@ -95,7 +95,7 @@ void TwitchAccount::loadIgnores()
                 "/blocks");
 
     NetworkRequest(url)
-    
+
         .authorizeTwitchV5(this->getOAuthClient(), this->getOAuthToken())
         .onSuccess([=](auto result) -> Outcome {
             auto document = result.parseRapidJson();
@@ -168,7 +168,7 @@ void TwitchAccount::ignoreByID(
                 "/blocks/" + targetUserID);
 
     NetworkRequest(url, NetworkRequestType::Put)
-    
+
         .authorizeTwitchV5(this->getOAuthClient(), this->getOAuthToken())
         .onError([=](int errorCode) {
             onFinished(IgnoreResult_Failed,
@@ -245,7 +245,7 @@ void TwitchAccount::unignoreByID(
                 "/blocks/" + targetUserID);
 
     NetworkRequest(url, NetworkRequestType::Delete)
-    
+
         .authorizeTwitchV5(this->getOAuthClient(), this->getOAuthToken())
         .onError([=](int errorCode) {
             onFinished(
@@ -279,7 +279,7 @@ void TwitchAccount::checkFollow(const QString targetUserID,
                 "/follows/channels/" + targetUserID);
 
     NetworkRequest(url)
-    
+
         .authorizeTwitchV5(this->getOAuthClient(), this->getOAuthToken())
         .onError([=](int errorCode) {
             if (errorCode == 203)
@@ -308,7 +308,7 @@ void TwitchAccount::followUser(const QString userID,
                     "/follows/channels/" + userID);
 
     NetworkRequest(requestUrl, NetworkRequestType::Put)
-    
+
         .authorizeTwitchV5(this->getOAuthClient(), this->getOAuthToken())
         .onSuccess([successCallback](auto result) -> Outcome {
             // TODO: Properly check result of follow request
@@ -326,7 +326,7 @@ void TwitchAccount::unfollowUser(const QString userID,
                     "/follows/channels/" + userID);
 
     NetworkRequest(requestUrl, NetworkRequestType::Delete)
-    
+
         .authorizeTwitchV5(this->getOAuthClient(), this->getOAuthToken())
         .onError([successCallback](int code) {
             if (code >= 200 && code <= 299)
@@ -368,7 +368,7 @@ void TwitchAccount::loadEmotes()
                 "/emotes");
 
     NetworkRequest(url)
-    
+
         .authorizeTwitchV5(this->getOAuthClient(), this->getOAuthToken())
         .onError([=](int errorCode) {
             log("[TwitchAccount::loadEmotes] Error {}", errorCode);
@@ -409,7 +409,7 @@ void TwitchAccount::autoModAllow(const QString msgID)
         .header("Content-Type", "application/json")
         .header("Content-Length", QByteArray::number(qba.size()))
         .payload(qba)
-    
+
         .authorizeTwitchV5(this->getOAuthClient(), this->getOAuthToken())
         .onError([=](int errorCode) {
             log("[TwitchAccounts::autoModAllow] Error {}", errorCode);
@@ -429,7 +429,7 @@ void TwitchAccount::autoModDeny(const QString msgID)
         .header("Content-Type", "application/json")
         .header("Content-Length", QByteArray::number(qba.size()))
         .payload(qba)
-    
+
         .authorizeTwitchV5(this->getOAuthClient(), this->getOAuthToken())
         .onError([=](int errorCode) {
             log("[TwitchAccounts::autoModDeny] Error {}", errorCode);