chore(formatting): format the whole codebase using nph 0.5.1

[diegomrsantos]

• format the whole codebase using nph 0.5.1
• add lint job to CI that fails the build if there are files not formatted. This job will be marked as required after this PR is merged.
• formatting was disabled for testutility due to a nph bug Error: Skipped file, formatted output does not match input (bug! 86fc4cd) arnetheduck/nph#69

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 89.54832% with 199 lines in your changes missing coverage. Please review.

Project coverage is 84.72%. Comparing base (02c96fc) to head (53ad1bf).
Report is 16 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1118      +/-   ##
==========================================
+ Coverage   84.53%   84.72%   +0.18%     
==========================================
  Files          91       92       +1     
  Lines       15517    16318     +801     
==========================================
+ Hits        13118    13825     +707     
- Misses       2399     2493      +94     

Files	Coverage Δ
libp2p/crypto/chacha20poly1305.nim	100.00% <100.00%> (ø)
libp2p/crypto/curve25519.nim	100.00% <100.00%> (ø)
libp2p/crypto/hkdf.nim	100.00% <100.00%> (+7.69%)	⬆️
libp2p/muxers/mplex/coder.nim	92.68% <100.00%> (ø)
libp2p/nameresolving/mockresolver.nim	94.73% <100.00%> (-0.72%)	⬇️
libp2p/protocols/connectivity/autonat/client.nim	100.00% <100.00%> (ø)
libp2p/protocols/connectivity/autonat/core.nim	65.38% <100.00%> (+0.33%)	⬆️
libp2p/protocols/connectivity/dcutr/core.nim	100.00% <100.00%> (ø)
libp2p/protocols/connectivity/relay/rtransport.nim	92.00% <100.00%> (-0.21%)	⬇️
libp2p/protocols/connectivity/relay/utils.nim	94.44% <100.00%> (ø)
... and 23 more

... and 21 files with indirect coverage changes

[kaiserd]

LGTM. Thank you very much!