This pr introduce the ability to set the `base_dir` used by the
`namespace`. This allow users to reuse the same node's directories
(config and database) and re-start the network from the latest state in
sequential runs.

Thx!

fix #218

cc @sandreim thanks for the suggestion :)

fix #210 

Also fix the log cmd string.

cc @michalkucharczyk , thanks!!

Firstly, thank you for an amazing library! The original zombienet is a
Polkadot staple and now being able to use it completely from Rust is a
game changer for us: as you may be aware, we have integrated
zombienet-sdk with
[pop-cli](https://github.com/paritytech/zombienet-sdk).

In doing so, we needed to add a few getters to the public api to be able
to present certain information to the user, as well we expose a little
more of the inner errors. This PR simply upstreams these changes.

It also includes two additional fixes, which may be better implemented
based on your guidance:
- collator args werent working for us when specified in a config file,
which seemed to be due to missing `--` in the args list provided by
calling functions.
- artifact path wasnt set when trying to build a chain spec. This may no
longer be required based on the changes in
https://github.com/paritytech/zombienet-sdk/commit/c7ce50c0

I am happy to add tests if you are open to these changes. 

Couple of fixes for docker provider and to use an external tool to build
the chain-spec.

docker support 

---------

Co-authored-by: Javier Viola <javier@parity.io>

Add:
 - logs methods in NetworkNode

- [k8s] fix `cmd` generator for collators (needs to use exposed ports).

based on #190 

cc: @s0me0ne-unkn0wn

Fix https://github.com/paritytech/zombienet-sdk/issues/169

- Add logic to retrieve available args from node before spawning the
full network using the output of the command with --help

A follow-up of #171 with the same motivation.

Concatenating the command line option and its value doesn't really work.
The shell treats `--opt val` as a single argument `--opt val` instead of
`--opt` `val` and fails to execute. This PR fixes that by separating
options from their values.

Error example:
```
error: unexpected argument '--workers-path ~/.cargo/bin/workers-1.6' found

  tip: a similar argument exists: '--workers-path'
```

Co-authored-by: Javier Viola <363911+pepoviola@users.noreply.github.com>

Add: 
  - async drop impl in k8s namespace / `noop` in native.
  - Modify example test.

Add:
 - Logic to use db_snapshot in both native/k8s providers
 - Small fix on chain_spec_path (for both native/k8s)
 - New example `db_snapshot`

Add small validation, mostly to ensure that the `image` is set in k8s.

fix #143

- Remove workaround on temp  node issues. (fixed in wrapper).

Fix typo :)

- Add clean disk space action.

Fix #173 

We should also add a follow up issue to improve the docs.

cc: @s0me0ne-unkn0wn

- Add `custom_parchain_fs_prefix` parameter to `add_para` fn (on running
network), this allow to manage the fs layout and allow to add paras with
the same id.
- Minor clippy auto-fixes

cc: @metricaez

---------

Co-authored-by: Loris Moulin <45130584+l0r1s@users.noreply.github.com>

Add: Manual variant to `RegistrationStrategy`, allow to deploy the
collators _but_ not register the para.
Fix: `created_paths` in native provider
Fix: Use `rpc` port for ws connections (orchestrator)

Add smoke test for k8s provider.

This is a very simple gitlab CI manifest to just check the tag on this
pipeline schedule it on Zombienet k8s runner and is the SA inject to the
runners in privileged enough to run command within the cluster or not

---------

Co-authored-by: Javier Viola <javier@parity.io>