docs(zk_toolbox): Add markdown help (#2562)

## What ❔

Autogenerated markdown help, it will allow to make the integration a bit
more straight forward

## Why ❔

<!-- Why are these changes done? What goal do they contribute to? What
are the principles behind them? -->
<!-- Example: PR templates ensure PR reviewers, observers, and future
iterators are in context about the evolution of repos. -->

## Checklist

<!-- Check your PR fulfills the following items. -->
<!-- For draft PRs check the boxes as you complete them. -->

- [ ] PR title corresponds to the body of PR (we generate changelog
entries from PRs).
- [ ] Tests for the changes have been added / updated.
- [ ] Documentation comments have been added / updated.
- [ ] Code has been formatted via `zk fmt` and `zk lint`.

---------

Signed-off-by: Danil <[email protected]>

zk_toolbox/Cargo.toml

@@ -54,3 +54,4 @@ tokio = { version = "1.37", features = ["full"] }
 toml = "0.8.12"
 url = { version = "2.5.0", features = ["serde"] }
 xshell = "0.2.6"
+clap-markdown = "0.1.4"

zk_toolbox/crates/zk_inception/Cargo.toml

@@ -33,3 +33,4 @@ thiserror.workspace = true
 zksync_config.workspace = true
 slugify-rs.workspace = true
 zksync_basic_types.workspace = true
+clap-markdown.workspace = true