fcd4efd8ec
Motivation: the behavior test that is now passing. The main change in this commit is introducing `Type.abiSizeAdvanced`, `Value.Tag.lazy_size`, and adjusting `Sema.zirSizeOf` to take advantage of these. However, the bulk of lines changed in this commit ended up being moving logic from value.zig and type.zig into Sema.zig. This logic had no business being in Type/Value as it was only called from a Sema context, and we need access to the Sema context for error reporting when a lazy Value is resolved. Also worth mentioning is that I bumped up the comptime `@floatToInt` implementation from using f64 to f128.
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