[Python][DuckSpark] Add Column and a bunch of DataFrame methods

[Tishj]

This PR continues on where #8165 left off

Added DataFrame methods:

join
sort
withColumn
withColumnRenamed
transform
filter
select
columns
alias
drop
groupBy
union
unionByName
dropDuplicates
distinct
count

Functions:

col
upper
when
struct
lit
regexp_replace
array_contains
avg
sum
max
mean
min
count
transform

Group methods:

count
mean
avg
max
min
sum
agg

Misc:

__contains__ for DuckDBPyRelation has been added:

import duckdb

rel = duckdb.sql("select a as my_col")
'my_col' in rel
# True

[Tishj]

Sorry for dropping this massive PR 😅
CI finally passed so I couldn't help myself

I do think it would be good to have this in the release, just because it fleshes out the DuckSpark implementation.
Without these additions I don't know how much value we can get in terms of feedback

[Mytherin]

Thanks!