Performance problem: slow format()

**Describe the bug**
- I want to render a page with a big list of some goods with some dates, e.g. expiration
- I have code similar to
```js
const now = dayjs();
const list = [];
for (const item of goods) {
list.push({
item,
expires: now.add(item.daysLeft).format(`D MMMM YYYY`)
});
}
// render the list
```

This takes too long, because every call to `.format()` does much of work under the hood: https://github.com/iamkun/dayjs/blob/a9d7d0398d22ebd4bfc3812ca0134a97606d54d9/src/index.js#L262-L342

The worst things performance-wise:
- the local functions `getShort`, `get$H`, `meridiemFunc`, `matches` are created on every call, even if not needed
- the same format string `D MMMM YYYY` is processed via `str.replace(C.REGEX_FORMAT, ...)` again and again on every call

**Expected behavior**
I'd like to have a way to preprocess/precompile format string in such a way that the following calls to `format()` will be very fast. E.g.

```js
const now = dayjs();
const list = [];
const precompiledFormat = dayjs.precompileFormat(`D MMMM YYYY`);
for (const item of goods) {
list.push({
item,
expires: now.add(item.daysLeft).format(precompiledFormat),
// or maybe:
expires: precompiledFormat(now.add(item.daysLeft))
});
}
// render the list
```

**Information**
- Day.js Version: 1.9.0
- OS: Mac OS 12
- Browser: Chrome 115

Start by reading the format implementation cited in src/index.js around lines 262-342, focusing on the repeated format-string processing and per-call helper creation. Benchmark repeated formatting of D MMMM YYYY, then define and verify a precompilation API that makes subsequent calls faster while preserving the existing formatted output.

Written by the indexing model from the issue text.