What

• Resolves: Move code-generated enum from union to int type. #7022

Probably best reviewed commit-by-commit.

Although we don't use it anywhere yet, this now supports putting numeric labels directly into our fbs definitions.

/// A test of an enumate with specified values.
enum ValuedEnum: byte {
    /// Default value.
    Default = 0 (default),

    /// One.
    One = 1,

    /// Two.
    Two = 2,

    /// Three.
    Three = 3,

    /// The answer to life, the universe, and everything.
    TheAnswer = 42,
}

Because of this, one notable change is that enum values are no longer shifted by 1. They match the fbs spec for the value.

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