feat: add url_download/url_upload as sql function

[frankliee]

Currently, download_url/upload_url only support DataFrame API, this PR adds download_url/upload_url to sql, which could be used for image processing demo.

df = daft.from_pydict({"urls": [
    "https://user-images.githubusercontent.com/17691182/190476440-28f29e87-8e3b-41c4-9c28-e112e595f558.png",
    "https://user-images.githubusercontent.com/17691182/190476440-28f29e87-8e3b-41c4-9c28-e112e595f558.png",
    "https://user-images.githubusercontent.com/17691182/190476440-28f29e87-8e3b-41c4-9c28-e112e595f558.png",
]})
df = daft.sql("SELECT image_decode(url_download(urls)) FROM df")
df.show()

[codspeed-hq]

CodSpeed Performance Report

Merging #3575 will improve performances by 48.63%

_{Comparing frankliee:sql-url (e72676f) with main (e59581c)}

Summary

⚡ 2 improvements
✅ 25 untouched benchmarks

Benchmarks breakdown

	Benchmark	main	frankliee:sql-url	Change
⚡	test_iter_rows_first_row[100 Small Files]	209.1 ms	175.7 ms	+19.02%
⚡	test_show[100 Small Files]	23.8 ms	16 ms	+48.63%

[codecov]

Codecov Report

Attention: Patch coverage is 54.72973% with 67 lines in your changes missing coverage. Please review.

Project coverage is 77.96%. Comparing base (e59581c) to head (e72676f).

Files with missing lines	Patch %	Lines
src/daft-sql/src/modules/url.rs	54.42%	67 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3575      +/-   ##
==========================================
- Coverage   77.99%   77.96%   -0.04%     
==========================================
  Files         720      721       +1     
  Lines       88794    88944     +150     
==========================================
+ Hits        69252    69341      +89     
- Misses      19542    19603      +61     

Files with missing lines	Coverage Δ
src/daft-functions/src/uri/download.rs	83.46% <ø> (ø)
src/daft-functions/src/uri/mod.rs	100.00% <ø> (ø)
src/daft-functions/src/uri/upload.rs	70.95% <ø> (+0.41%)	⬆️
src/daft-sql/src/functions.rs	81.85% <100.00%> (+0.08%)	⬆️
src/daft-sql/src/modules/url.rs	54.42% <54.42%> (ø)

... and 4 files with indirect coverage changes

[jaychia]

@andrewgazelka could you help get this through?

[frankliee]

Would you please consider reviewing this PR? @andrewgazelka

[andrewgazelka]

Would you please consider reviewing this PR? @andrewgazelka

Hey sorry I missed the @ . I will look at now :)

[andrewgazelka]

I think this PR could benefit from some minor changes

[andrewgazelka]

LGTM CC @universalmind303 for sanity check as he has touched a lot of code in this area

[andrewgazelka]

^