Download standard libraries in a zipfile. ### Description

This is a re-work of #3166. After this PR, the standard libraries are not vendored with `pyodide.asm.data`. Instead, it is now downloaded separately in a zip file similar to how we download pyodide_py.tar.

~~The hard part of this PR is to bootstrap Python without Python source codes. This requires deep-freezing all modules that are required during the bootstrap.~~

~~As mentioned in #3539, `encodings` module is needed during the bootstrap stage, but it is a large module (> 1.0MB) containing a bunch of encodings in the world, so I tried to freeze a subset of the encodings module that is used in the bootstrap (thanks for the idea from Hood), so the size increase of pyodide.asm.wasm is only 70KB.~~

~~However, the problem of freezing only part of the module is that the current Python import system does not support it. Therefore, I added some hacks to make it work, which is explained in a comment in pyodide.ts.~~

### File size change after this PR:

Before

```
- pyodide.asm.data:
    Original size: 4555 KB
    Gzip compressed size (level 1): 3062 KB
    Gzip compressed size (level 6): 2911 KB
    Gzip compressed size (level 9): 2911 KB
    Brotli compressed size: 2522 KB
- pyodide.asm.js:
    Original size: 1186 KB
    Gzip compressed size (level 1): 246 KB
    Gzip compressed size (level 6): 208 KB
    Gzip compressed size (level 9): 208 KB
    Brotli compressed size: 169 KB
- pyodide.asm.wasm:
    Original size: 8715 KB
    Gzip compressed size (level 1): 3142 KB
    Gzip compressed size (level 6): 2791 KB
    Gzip compressed size (level 9): 2791 KB
    Brotli compressed size: 2096 KB
```

After

```
- pyodide.asm.data:
    Original size: 4 KB
    Gzip compressed size (level 1): 0 KB
    Gzip compressed size (level 6): 0 KB
    Gzip compressed size (level 9): 0 KB
    Brotli compressed size: 0 KB
- pyodide.asm.js:
    Original size: 1086 KB
    Gzip compressed size (level 1): 213 KB
    Gzip compressed size (level 6): 177 KB
    Gzip compressed size (level 9): 177 KB
    Brotli compressed size: 145 KB
- pyodide.asm.wasm:
    Original size: 8775 KB
    Gzip compressed size (level 1): 3162 KB
    Gzip compressed size (level 6): 2806 KB
    Gzip compressed size (level 9): 2806 KB
    Brotli compressed size: 2105 KB
- python_stdlib.zip:
    Original size: 2230 KB
    Gzip compressed size (level 1): 2196 KB
    Gzip compressed size (level 6): 2194 KB
    Gzip compressed size (level 9): 2194 KB
    Brotli compressed size: 2181 KB
```


### Remaining works:

- remove pyodide.asm.data: the only remaining parts inside pyodide.asm.data is our [webbrowser.py](https://github.com/pyodide/pyodide/blob/main/src/py/lib/webbrowser.py) stub, I think we can either remove it or move it into pyodide_py.
- maybe merge pyodide_py.tar into the standard libraries zipfile.
- add option to use pycompiled standard libraries.

### Checklists

- [x] Add a [CHANGELOG](https://github.com/pyodide/pyodide/blob/main/docs/project/changelog.md) entry
- [x] Add / update tests

.PHONY=pyodide-build

export PYODIDE_ROOT=$(abspath ..)
include ../Makefile.envs

all: pyodide-build
	mkdir -p $(HOSTINSTALLDIR) $(WASM_LIBRARY_DIR)
	PYODIDE_ROOT=$(PYODIDE_ROOT) pyodide build-recipes \
	"$(PYODIDE_PACKAGES)" \
	--recipe-dir=./ \
	--install \
	--install-dir=../dist \
	--n-jobs $${PYODIDE_JOBS:-4} \
	--log-dir=./build-logs

pyodide-build: ../pyodide-build/pyodide_build/**
	$(HOSTPYTHON) -m pip install -e ../pyodide-build

update-all:
	for pkg in $$(find . -maxdepth 1 ! -name ".*" -type d -exec basename {} \; | tail -n +2); do \
		PYODIDE_ROOT=$(PYODIDE_ROOT) python -m pyodide_build mkpkg "$${pkg}" --update; \
	done

clean:
	rm -rf ./*/build ./*/build.log ./*/dist
	rm -rf ./.artifacts ./.libs

.PHONY=pyodide-build

export PYODIDE_ROOT=$(abspath ..)
include ../Makefile.envs

all:
	mkdir -p $(HOSTINSTALLDIR) $(WASM_LIBRARY_DIR)
	PYODIDE_ROOT=$(PYODIDE_ROOT) pyodide build-recipes \
	"$(PYODIDE_PACKAGES)" \
	--recipe-dir=./ \
	--install \
	--install-dir=../dist \
	--n-jobs $${PYODIDE_JOBS:-4} \
	--log-dir=./build-logs

update-all:
	for pkg in $$(find . -maxdepth 1 ! -name ".*" -type d -exec basename {} \; | tail -n +2); do \
		PYODIDE_ROOT=$(PYODIDE_ROOT) python -m pyodide_build mkpkg "$${pkg}" --update; \
	done

clean:
	rm -rf ./*/build ./*/build.log ./*/dist
	rm -rf ./.artifacts ./.libs
