Added basic arena implementation w/ linear allocator

include/arena.h

@@ -0,0 +1,27 @@
+#ifndef ARENA_H
+#define ARENA_H
+
+#include <stdint.h>
+
+typedef struct {
+    uint8_t *buffer;
+    size_t capacity;
+    size_t offset;
+} Arena;
+
+Arena *ArenaInit(size_t capacity);
+void ArenaDestroy(Arena *arena);
+
+void *ArenaAlloc(Arena *arena, size_t size);
+void *ArenaAllocZero(Arena *arena, size_t size);
+
+void ArenaFree(Arena *arena, size_t size);
+void ArenaFreeAndNullify(Arena *arena, size_t size, void **ptrAddress);
+
+// Fundamentally returns how many bytes have been allocated
+size_t ArenaGetOffset(Arena *arena);
+
+void ArenaSetOffsetBack(Arena *arena, size_t offset);
+void ArenaClear(Arena *arena);
+
+#endif // ARENA_H