Project restructuring (fixes macOS builds) (#198)

- Create `Include/` folder for all main projects
- Fix some issues here and there (found while moving things)
- All includes are now in `Tactility/` subfolder and must be included with that prefix. This fixes issues with clashing POSIX headers (e.g. `<semaphore.h>` versus Tactility's `Semaphore.h`)

TactilityCore/Include/Tactility/Bundle.h

@@ -0,0 +1,64 @@
+/**
+ * @brief key-value storage for general purpose.
+ * Maps strings on a fixed set of data types.
+ */
+#pragma once
+
+#include <cstdint>
+#include <string>
+#include <unordered_map>
+
+namespace tt {
+
+/**
+ * A dictionary that maps keys (strings) onto several atomary types.
+ */
+class Bundle {
+
+private:
+
+    typedef uint32_t Hash;
+
+    enum class Type {
+        Bool,
+        Int32,
+        String,
+    };
+
+    typedef struct {
+        Type type;
+        union {
+            bool value_bool;
+            int32_t value_int32;
+        };
+        std::string value_string;
+    } Value;
+
+    std::unordered_map<std::string, Value> entries;
+
+public:
+
+    Bundle() = default;
+
+    Bundle(const Bundle& bundle) {
+        this->entries = bundle.entries;
+    }
+
+    bool getBool(const std::string& key) const;
+    int32_t getInt32(const std::string& key) const;
+    std::string getString(const std::string& key) const;
+
+    bool hasBool(const std::string& key) const;
+    bool hasInt32(const std::string& key) const;
+    bool hasString(const std::string& key) const;
+
+    bool optBool(const std::string& key, bool& out) const;
+    bool optInt32(const std::string& key, int32_t& out) const;
+    bool optString(const std::string& key, std::string& out) const;
+
+    void putBool(const std::string& key, bool value);
+    void putInt32(const std::string& key, int32_t value);
+    void putString(const std::string& key, const std::string& value);
+};
+
+} // namespace