[Filter] Restore exact, case-insensitive set code search (#7336)

* [Filter] Restore exact, case-insensitive set code search (#7332, #7333)

* [Filter] Group set query suffix modes into a subrule

Address review feedback: keep the 'e'/'set' prefix in one place and move
the three suffix modes (exact, negated, release-date comparison) into a
dedicated choice-like rule so sv.choice() still dispatches on them.

Add coverage for the release-date comparison mode.

---------

Co-authored-by: Lukas Brübach <Bruebach.Lukas@bdosecurity.de>

libcockatrice_filters/libcockatrice/filters/filter_string.cpp

@@ -20,7 +20,8 @@ SomewhatComplexQueryPart <- [(] QueryPartList [)] / QueryPart
 QueryPart <- NotQuery / SetQuery / RarityQuery / CMCQuery / FormatQuery / PowerQuery / ToughnessQuery / ColorQuery / TypeQuery / OracleQuery / FieldQuery / GenericQuery
 
 NotQuery <- ('NOT' ws/'-') SomewhatComplexQueryPart
-SetQuery <- ('e'/'set') SetExpression / ([:] FlexStringValue)
+SetQuery <- ('e'/'set') SetQueryValue
+SetQueryValue <- ([=:] FlexStringValue) / (<[!][=]?> FlexStringValue) / SetExpression
 OracleQuery <- 'o' [:] MatcherString
 
 
@@ -133,8 +134,8 @@ static void setupParserRules()
         const auto matcher = std::any_cast<StringMatcher>(sv[0]);
         return [=](const CardData &x) -> bool { return matcher(x->getCardType()); };
     };
-    search["SetQuery"] = [](const peg::SemanticValues &sv) -> Filter {
-        if (sv.choice() == 1) {
+    search["SetQueryValue"] = [](const peg::SemanticValues &sv) -> Filter {
+        if (sv.choice() == 0) {
             auto matcher = std::any_cast<StringMatcher>(sv[0]);
             return [=](const CardData &x) -> bool {
                 QList<QString> sets = x->getSets().keys();
@@ -143,6 +144,15 @@ static void setupParserRules()
                 return std::any_of(sets.begin(), sets.end(), matchesSet);
             };
         }
+        if (sv.choice() == 1) {
+            auto matcher = std::any_cast<StringMatcher>(sv[0]);
+            return [=](const CardData &x) -> bool {
+                QList<QString> sets = x->getSets().keys();
+
+                auto matchesSet = [&matcher](const QString &set) { return matcher(set); };
+                return std::none_of(sets.begin(), sets.end(), matchesSet);
+            };
+        }
 
         auto matcher = std::any_cast<NumberMatcher>(sv[0]);
         return [=](const CardData &x) -> bool {