style: use snake_case for constants

source/strpool/strpool.hon

@@ -6,7 +6,7 @@ InternError :: enum { out_of_space }
 
 StringId :: alias u32
 
-NO_STR :: maxval!(StringId)
+no_str :: maxval!(StringId)
 
 #! global pool owned by main.hon; initialize before scanning and release with deinit.
 strings StringPool := undefined
@@ -38,7 +38,7 @@ deinit proc(pool @mut StringPool) void {
 intern proc(pool @mut StringPool, str []u8) StringId ! (mem.AllocError | InternError) {
     if hashmap.get(&pool.ids, str) |id| return id
 
-    if (pool.strings.items.len >= usize(NO_STR)) return .out_of_space
+    if (pool.strings.items.len >= usize(no_str)) return .out_of_space
     id :: StringId(pool.strings.items.len)
 
     owned_str []mut u8 :: try mem.alloc(u8, pool.allocator, str.len)