VM basics (#5)

Co-authored-by: Andre Wagner <WagnerAndre@JohnDeere.com>
Reviewed-on: https://192.168.5.48/andre/tyche/pulls/5

src/vm/stack.hh

@@ -6,7 +6,7 @@
 
 #include "value.hh"
 
-namespace tyche {
+namespace tyche::vm {
 
 class Stack {
 public:
@@ -21,6 +21,10 @@ public:
     void push_fp();
     void pop_fp();
 
+    [[nodiscard]] size_t fp_level() const { return fps_.size(); }
+
+    [[nodiscard]] std::string debug() const;
+
 private:
     std::vector<Value> stack_;
     std::stack<size_t> fps_;