feat: link to source code on Github

[ncclementi]

I would like to be able to link to the source code on github from the docs API docs. For example like done in the pandas docs.
See here

https://pandas.pydata.org/docs/reference/api/pandas.read_parquet.html#pandas-read-parquet

If you link to in [source] it'll redirect to https://github.com/pandas-dev/pandas/blob/v2.2.2/pandas/io/parquet.py#L498-L676

Opening a separate issue since the conversation where the original comments are is slightly different.

xref: #225 (comment)
xref: #225 (comment)

cc: @deepyaman @gforsyth

[machow]

Hey, I'm so sorry about the wait -- I'm prep'ing for posit::conf(), but want to do a big of quartodoc work later in the month. This is a piece we need in a few doc sites (like Great Tables), and I can take a pass at it then!

[ncclementi]

Thanks @machow, we would really love this for the Ibis docs : )