[Zion/Glacier] Add a HashMap to store process capabilities.

lib/glacier/container/pair.h

@@ -1,14 +1,23 @@
 #pragma once
 
+#include <stdint.h>
+
+#include "glacier/memory/move.h"
+
 namespace glcr {
 
 template <typename T, typename U>
 class Pair {
  public:
   Pair(const T& first, const U& second) : first_(first), second_(second) {}
+  Pair(T&& first, U&& second) : first_(Move(first)), second_(Move(second)) {}
   T& first() { return first_; }
   U& second() { return second_; }
 
+  bool operator==(const Pair& other) {
+    return other.first_ == first_ && other.second_ == second_;
+  }
+
  private:
   T first_;
   U second_;