Enforce consistent and correct toml formatting (#2518)

Using taplo, fixes all our broken and inconsistent toml formatting and
adds CI to keep them tidy.

If people want we can customise the format rules as described here
https://taplo.tamasfe.dev/configuration/formatter-options.html

@ggwpez, I suggest zepter is used only for checking features are
propagated, and leave formatting for taplo to avoid duplicate work and
conflicts.

TODO
- [x] Use `exclude = [...]` syntax in taplo file to ignore zombienet
tests instead of deleting the dir

---------

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: Bastian Köcher <git@kchr.de>

substrate/client/network/Cargo.toml

@@ -25,7 +25,7 @@ fnv = "1.0.6"
 futures = "0.3.21"
 futures-timer = "3.0.2"
 ip_network = "0.4.1"
-libp2p = { version = "0.51.3", features = ["dns", "identify", "kad", "macros", "mdns", "noise", "ping", "tcp",  "tokio", "yamux", "websocket", "request-response"] }
+libp2p = { version = "0.51.3", features = ["dns", "identify", "kad", "macros", "mdns", "noise", "ping", "request-response", "tcp", "tokio", "websocket", "yamux"] }
 linked_hash_set = "0.1.3"
 log = "0.4.17"
 mockall = "0.11.3"
@@ -39,7 +39,7 @@ smallvec = "1.11.0"
 thiserror = "1.0"
 tokio = { version = "1.22.0", features = ["macros", "sync"] }
 tokio-stream = "0.1.7"
-unsigned-varint = { version = "0.7.1", features = ["futures", "asynchronous_codec"] }
+unsigned-varint = { version = "0.7.1", features = ["asynchronous_codec", "futures"] }
 zeroize = "1.4.3"
 prometheus-endpoint = { package = "substrate-prometheus-endpoint", path = "../../utils/prometheus" }
 sc-client-api = { path = "../api" }