feat: add support for int, float, and bool on ingress

[wesbillman]

Some go examples:

//ftl:verb
//ftl:ingress http GET /int
func Int(ctx context.Context, req builtin.HttpRequest[int]) (builtin.HttpResponse[int], error) {
	return builtin.HttpResponse[int]{Body: req.Body}, nil
}

//ftl:verb
//ftl:ingress http GET /float
func Float(ctx context.Context, req builtin.HttpRequest[float64]) (builtin.HttpResponse[float64], error) {
	return builtin.HttpResponse[float64]{Body: req.Body}, nil
}

//ftl:verb
//ftl:ingress http GET /bool
func Bool(ctx context.Context, req builtin.HttpRequest[bool]) (builtin.HttpResponse[bool], error) {
	return builtin.HttpResponse[bool]{Body: req.Body}, nil
}

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[alecthomas]

Love the tests!

[wesbillman]

Me too!

[alecthomas]

I'd use the strconv package rather than Sprintf for these values here and below.

strconv.Itoa(), strconv.FormatBool(), though strconv.FormatFloat() might be too annoying.

[wesbillman]

strconv.FormatFloat(responseFloat, 'f', -1, 64 yeah this format is crazy! :)

[alecthomas]

Don't use ParseFloat for integers, it loses precision.

[alecthomas]

"not a valid"