lightning-net-tokio: Don't require Arc<PeerManager>

[MaxFangX]

Fixes the last net tokio API quirk where the peer manager parameter was required to be Arc<PeerManager<_>> instead of simply Deref<Target = PeerManager<_>> + Clone.

[codecov-commenter]

Codecov Report

Base: 90.70% // Head: 90.70% // Increases project coverage by +0.00% 🎉

Coverage data is based on head (fce0397) compared to base (437fa4f).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1968   +/-   ##
=======================================
  Coverage   90.70%   90.70%           
=======================================
  Files          97       97           
  Lines       50577    50588   +11     
  Branches    50577    50588   +11     
=======================================
+ Hits        45874    45887   +13     
+ Misses       4703     4701    -2     

Impacted Files	Coverage Δ
lightning-net-tokio/src/lib.rs	77.77% <100.00%> (+0.46%)	⬆️
lightning/src/ln/peer_channel_encryptor.rs	93.38% <0.00%> (-0.25%)	⬇️
lightning/src/chain/onchaintx.rs	94.35% <0.00%> (-0.21%)	⬇️
lightning/src/ln/functional_tests.rs	96.98% <0.00%> (-0.04%)	⬇️
lightning/src/ln/channelmanager.rs	87.11% <0.00%> (+<0.01%)	⬆️
lightning-background-processor/src/lib.rs	95.46% <0.00%> (+0.01%)	⬆️
lightning-invoice/src/payment.rs	89.63% <0.00%> (+0.15%)	⬆️
lightning/src/chain/channelmonitor.rs	91.03% <0.00%> (+0.19%)	⬆️

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[jkczyz]

Nice! Almost forgot that Clone is implemented on references.