Set up the compiler to ptrace the runtime (#107)

* set up the compiler to ptrace the runtime

* clang format

* move debugger state to a separate Debugger class

* support registers and break and continue

* documentation and fix windows

* make listener part of compiler, not a separate library

* implement memory read and write

* fix for windows

test/test_kernel.cpp

@@ -334,7 +334,7 @@ TEST(Kernel, PrintBuffer) {
   clear_print();
   cprintf("test!\n");
 
-  std::string result = PrintBufArea.cast<char>().c() + sizeof(GoalMessageHeader);
+  std::string result = PrintBufArea.cast<char>().c() + sizeof(ListenerMessageHeader);
   EXPECT_EQ(result, "test!\n");
 
   delete[] mem;