Allow using bitwise operators on boolean vectors

[nikneym]

@reduce allows doing bitwise operations on boolean vectors, like this:

const a: @Vector(16, u8) = @splat('a');
const b: @Vector(16, u8) = @splat('b');

// false
@reduce(.Or, a == b);

However, following is not allowed:

// Vector full of dots.
const dot: @Vector(16, u8) = @splat('.');
// Vector full of spaces.
const space: @Vector(16, u8) = @splat(' ');
// Chunk we want to do search on.
const chunk: @Vector(16, u8) = "quick brown fox.".*;

// Find the occurrences of either dot or space.
const result = (chunk == dot) | (chunk == space);

error: invalid operands to binary bitwise expression: 'vector' and 'vector'

This works if the boolean vectors are casted to integer vectors with @intFromBool:

const result = @intFromBool(chunk == dot) | @intFromBool(chunk == space);

I believe allowing the earlier would be more convenient.

[IntegratedQuantum]

related: #14306

[nikneym]

Seems it has landed in #24131, fantastic!