if = is on newline within function call, move key to same line

[lorenzwalthert]

Closes #922.

call(a = b, x
     =2)

# becomes 
call(
  a = b,
  x = 2
)

[github-actions]

This is how benchmark results would change (along with a 95% confidence interval in relative change) if 3fa0b67 is merged into main:

•   :rocket:cache_applying: 24.1ms -> 23.9ms [-1.34%, -0.28%]
• ❗🐌cache_recording: 1.02s -> 1.04s [+1.71%, +2.36%]
•   :ballot_box_with_check:without_cache: 2.74s -> 2.97s [-3%, +19.56%]

Further explanation regarding interpretation and methodology can be found in the documentation.

[github-actions]

This is how benchmark results would change (along with a 95% confidence interval in relative change) if 1b78296 is merged into main:

•   :ballot_box_with_check:cache_applying: 24.2ms -> 24.2ms [-1.09%, +0.68%]
• ❗🐌cache_recording: 973ms -> 995ms [+1.95%, +2.74%]
• ❗🐌without_cache: 2.62s -> 2.67s [+1.64%, +2.34%]

Further explanation regarding interpretation and methodology can be found in the documentation.

[github-actions]

This is how benchmark results would change (along with a 95% confidence interval in relative change) if 46b67a8 is merged into main:

•   :ballot_box_with_check:cache_applying: 24.2ms -> 24.2ms [-0.42%, +0.64%]
•   :ballot_box_with_check:cache_recording: 1.04s -> 1.04s [-0.54%, +0.52%]
•   :ballot_box_with_check:without_cache: 2.78s -> 2.78s [-0.67%, +0.54%]

Further explanation regarding interpretation and methodology can be found in the documentation.