feat(rust/signed-doc): mk_signed_doc allow to use two types of keys bip32 extended and regular one

[Mr-Leshiy]

Description

Modify the mk_signed_doc sign command to allow provide a regular or bip32 extended secret key, based on the provided key_type argument. Default value is regular type

Related Pull Requests

Needed for https://github.com/input-output-hk/catalyst-voices/actions

Please confirm the following checks

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream module

[github-actions]

📚 Docs Preview

The docs for this PR can be previewed at the following URL:

https://docs.dev.projectcatalyst.io/libs/feat/mk-signed-doc-new-sign

[github-actions]

✅ Test Report | ${\color{lightgreen}Pass: 584/584}$ | ${\color{red}Fail: 0/584}$ |

[Mr-Leshiy]

duplicate of #667