Allow integrated relay chain light client (#2270)

* Add embedded light client to cli

* Prepare for light-client-worker

* First working version

* Clean up

* Remove unwanted logs

* Simplify subscription code

* Let jsonrpsee handle rpc management

* Simplify implementation

* Reorganize crate structure

* Use relay chain arg chainspec for light-client

* Clean up command line

* Add light client worker file

* Use smoldot master to avoid wasmtime conflict

* Remove sleep

* Improve naming of cli option

* Remove conflict with `validator`

* Improve docs

* Update smoldot, remove unwanted change

* Apply suggestions from code review

Co-authored-by: Dmitry Markin <dmitry@markin.tech>

* Disable collation

* Reviewer comments

* Update smoldot and tokio-platform

* Update smoldot

* Update smoldot

* Adjust to new version

* Patch substrate

* Use constants

* Add readme entry, improve zombienet tests

* Apply suggestions from code review

Co-authored-by: Michal Kucharczyk <1728078+michalkucharczyk@users.noreply.github.com>

* Make execution mode an enum

* Update smoldot, remove substrate patch

* Update client/relay-chain-rpc-interface/src/rpc_client.rs

Co-authored-by: Michal Kucharczyk <1728078+michalkucharczyk@users.noreply.github.com>

* Reduce duplicate code

* Update smoldot

* Update smoldot

* Fix build

* Update smoldot

* Make platform compile

* Clean up dependencies

* Use crates.io instead of github for smoldot

* Apply suggestions from code review

Co-authored-by: Davide Galassi <davxy@datawok.net>

* Docs

* Improve docs

* Remove `RpcFrontend`

---------

Co-authored-by: Dmitry Markin <dmitry@markin.tech>
Co-authored-by: Michal Kucharczyk <1728078+michalkucharczyk@users.noreply.github.com>
Co-authored-by: Davide Galassi <davxy@datawok.net>

cumulus/zombienet/tests/0002-pov_recovery.toml

@@ -33,8 +33,8 @@ add_to_genesis = false
   command = "test-parachain"
   args = ["--disable-block-announcements"]
 
-  # run alice as a parachain collator who does not produce blocks
-  # alice is a bootnode for bob and charlie
+  # run 'alice' as a parachain collator who does not produce blocks
+  # 'alice' is a bootnode for 'bob' and 'charlie'
   [[parachains.collators]]
   name = "alice"
   validator = true # collator
@@ -42,7 +42,7 @@ add_to_genesis = false
   command = "test-parachain"
   args = ["-lparachain::availability=trace,sync=debug,parachain=debug,cumulus-pov-recovery=debug,cumulus-consensus=debug", "--use-null-consensus", "--disable-block-announcements", "--bootnodes {{'bob'|zombie('multiAddress')}}",  "--", "--reserved-only", "--reserved-nodes {{'ferdie'|zombie('multiAddress')}}"]
 
-  # run eve as a parachain full node
+  # run 'charlie' as a parachain full node
   [[parachains.collators]]
   name = "charlie"
   validator = false # full node
@@ -50,7 +50,7 @@ add_to_genesis = false
   command = "test-parachain"
   args = ["-lparachain::availability=trace,sync=debug,parachain=debug,cumulus-pov-recovery=debug,cumulus-consensus=debug", "--disable-block-announcements", "--bootnodes {{'bob'|zombie('multiAddress')}}","--", "--reserved-only", "--reserved-nodes {{'ferdie'|zombie('multiAddress')}}"]
 
-  # we fail recovery for eve from time to time to test retries
+  # we fail recovery for 'eve' from time to time to test retries
   [[parachains.collators]]
   name = "eve"
   validator = true # collator
@@ -58,7 +58,7 @@ add_to_genesis = false
   command = "test-parachain"
   args = ["-lparachain::availability=trace,sync=debug,parachain=debug,cumulus-pov-recovery=debug,cumulus-consensus=debug", "--fail-pov-recovery", "--use-null-consensus", "--disable-block-announcements", "--bootnodes {{'bob'|zombie('multiAddress')}}",  "--", "--reserved-only", "--reserved-nodes {{'ferdie'|zombie('multiAddress')}}"]
 
-  # run one as a RPC collator who does not produce blocks
+  # run 'one' as a RPC collator who does not produce blocks
   [[parachains.collators]]
   name = "one"
   validator = true # collator
@@ -66,10 +66,18 @@ add_to_genesis = false
   command = "test-parachain"
   args = ["-lparachain::availability=trace,sync=debug,parachain=debug,cumulus-pov-recovery=debug,cumulus-consensus=debug", "--use-null-consensus", "--disable-block-announcements", "--bootnodes {{'bob'|zombie('multiAddress')}}", "--relay-chain-rpc-url {{'ferdie'|zombie('wsUri')}}", "--", "--reserved-only", "--reserved-nodes {{'ferdie'|zombie('multiAddress')}}"]
 
-  # run two as a RPC parachain full node
+  # run 'two' as a RPC parachain full node
   [[parachains.collators]]
   name = "two"
   validator = false # full node
   image = "{{COL_IMAGE}}"
   command = "test-parachain"
   args = ["-lparachain::availability=trace,sync=debug,parachain=debug,cumulus-pov-recovery=debug,cumulus-consensus=debug", "--disable-block-announcements", "--bootnodes {{'bob'|zombie('multiAddress')}}", "--relay-chain-rpc-url {{'ferdie'|zombie('wsUri')}}", "--", "--reserved-only", "--reserved-nodes {{'ferdie'|zombie('multiAddress')}}"]
+
+  # run 'three' with light client
+  [[parachains.collators]]
+  name = "three"
+  validator = false # full node
+  image = "{{COL_IMAGE}}"
+  command = "test-parachain"
+  args = ["-lparachain::availability=trace,sync=debug,parachain=debug,cumulus-pov-recovery=debug,cumulus-consensus=debug", "--disable-block-announcements", "--bootnodes {{'bob'|zombie('multiAddress')}}", "--relay-chain-light-client", "--", "--reserved-only", "--reserved-nodes {{'ferdie'|zombie('multiAddress')}}"]