Lowercase TRUE and FALSE, rename b32 to bool

[bates64]

• Make every instance of TRUE/FALSE true/false respectively
• Replace b32 with enum { true, false } bool (i.e. TRUE/FALSE are not macros anymore, they are enum members)
• Don't define bool, true, false on C23 or above where stdbool.h could be used instead

e.g.

#if __STDC_VERSION__ >= 202311L
#include <stdbool.h>
#else
typedef enum {
    false,
    true
} bool;
#endif

typedef s8 b8;
typedef s16 b16;
// no more b32, TRUE, or FALSE

[ethteck]

What's the idea here? I'm not sure porting just lowercase true/false to old gcc is worth it. If we really wanted lowercase t/f we could just make macros for them, but I don't see the motivation

[bates64]

I meant macros