Update various doc files

[t-bast]

• link to plugins repository
• remove android mention for eclair
• update other implementations (renamed)
• update docker CI action versions
• missing eclair-cli APIs in help

[codecov-commenter]

Codecov Report

Merging #2547 (7793665) into master (d76d0f6) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2547   +/-   ##
=======================================
  Coverage   85.28%   85.28%           
=======================================
  Files         203      203           
  Lines       16068    16068           
  Branches      691      691           
=======================================
  Hits        13703    13703           
  Misses       2365     2365           

Impacted Files	Coverage Δ
...src/main/scala/fr/acinq/eclair/db/pg/PgUtils.scala	89.39% <0.00%> (-1.52%)	⬇️
...clair/channel/publish/ReplaceableTxPublisher.scala	74.19% <0.00%> (-1.30%)	⬇️
...fr/acinq/eclair/channel/InteractiveTxBuilder.scala	85.07% <0.00%> (-0.53%)	⬇️
...main/scala/fr/acinq/eclair/io/PeerConnection.scala	86.44% <0.00%> (+0.36%)	⬆️
...cala/fr/acinq/eclair/crypto/TransportHandler.scala	91.16% <0.00%> (+0.55%)	⬆️
...cala/fr/acinq/eclair/payment/relay/NodeRelay.scala	97.94% <0.00%> (+0.68%)	⬆️
...cinq/eclair/payment/receive/MultiPartHandler.scala	95.23% <0.00%> (+1.05%)	⬆️