Feature idea: `{#switch}`

[Henodude]

Is your feature request related to a problem? Please describe.
In svelte, if you want each value of a number to do something different, you have to have something like this:

{#if value === 1}
one
{:else if value === 2}
two
{:else if value === 3}
three
{:else}
some other number
{/if}

However, this can be tedious.

Describe the solution you'd like
I want a {#switch} block. You would use it like this:

{#switch value}
{:case 1}
one
{:case 2}
two
{:case 3}
three
{:default}
some other number
{/switch}

How important is this feature to you?
It's not very important. It's just a more convenient syntax to do things.

[Conduitry]

This has come up before, and there's currently an RFC that someone has opened for it at sveltejs/rfcs#49