core/ipc: add ipc server/client

Currently can only kill a remote instance.

src/core/instanceinfo.cpp

@@ -0,0 +1,31 @@
+#include "instanceinfo.hpp"
+
+#include <qdatastream.h>
+
+QDataStream& operator<<(QDataStream& stream, const InstanceInfo& info) {
+	stream << info.instanceId << info.configPath << info.shellId << info.launchTime;
+	return stream;
+}
+
+QDataStream& operator>>(QDataStream& stream, InstanceInfo& info) {
+	stream >> info.instanceId >> info.configPath >> info.shellId >> info.launchTime;
+	return stream;
+}
+
+QDataStream& operator<<(QDataStream& stream, const RelaunchInfo& info) {
+	stream << info.instance << info.noColor << info.sparseLogsOnly;
+	return stream;
+}
+
+QDataStream& operator>>(QDataStream& stream, RelaunchInfo& info) {
+	stream >> info.instance >> info.noColor >> info.sparseLogsOnly;
+	return stream;
+}
+
+InstanceInfo InstanceInfo::CURRENT = {}; // NOLINT
+
+namespace qs::crash {
+
+CrashInfo CrashInfo::INSTANCE = {}; // NOLINT
+
+}