Universal collection syntax

While writing tests for the newly added array function in the stdlib (#839), I have found myself using the `array::fromList` function quite often. We also have briefly discussed this in one of the previous Effekt meetings and [here](https://github.com/effekt-lang/effekt/pull/743#issuecomment-2618481774); what if we had a shared syntax for creating collections?

## Idea

We re-use the `emit` effect:

```
array#[1, 2, 3]
```

is converted to

```
collectArray {
do emit(1)
do emit(2)
do emit(3)
}
```

Note that `collectArray` and other functions for collecting (ha!) collections are already implemented in [stream.effekt](https://github.com/effekt-lang/effekt/blob/d57b530c328437c62b6c4a4b1e0a0651785aab3c/libraries/common/stream.effekt#L169-L214)
such this would merely be a change in the parser similar to #743.

Of course, this would also work for `bytearray`:

```
bytes#[1.toByte, 2.toByte, 3.toByte]
```

is converted to

```
collectBytes {
do emit(1.toByte)
do emit(2.toByte)
do emit(3.toByte)
}
```

(We should probably rename `collectBytes` to just `bytes` and `collectArray` to `array` for consistency.)

## Caveats

- Possible performance & overhead penalty.
- Possibly confusing error messages similar to #743.
- The syntax does not work for maps, sets and other collections that need a comparison function. I can see this changing if and once Effekt has type classes.

## Benefits

- Nice and unique usage of effects!
- Better ergonomics

## To Discuss

- Weigh pro and cons
- Decide on syntax