add: migrate source code of luahook

blcrack/cracker/Dobby/source/Interceptor.cpp

@@ -0,0 +1,40 @@
+#include "Interceptor.h"
+
+Interceptor *Interceptor::instance = nullptr;
+
+Interceptor *Interceptor::SharedInstance() {
+  if (Interceptor::instance == nullptr) {
+    Interceptor::instance = new Interceptor();
+  }
+  return Interceptor::instance;
+}
+
+InterceptEntry *Interceptor::find(addr_t addr) {
+  for (auto *entry : entries) {
+    if (entry->patched_addr == addr) {
+      return entry;
+    }
+  }
+  return nullptr;
+}
+
+void Interceptor::add(InterceptEntry *entry) {
+  entries.push_back(entry);
+}
+
+void Interceptor::remove(addr_t addr) {
+  for (auto iter = entries.begin(); iter != entries.end(); iter++) {
+    if ((*iter)->patched_addr == addr) {
+      entries.erase(iter);
+      break;
+    }
+  }
+}
+
+const InterceptEntry *Interceptor::getEntry(int i) {
+  return entries[i];
+}
+
+int Interceptor::count() {
+  return entries.size();
+}