refactor: update error management and config/process

[Freyskeyd]

Description

This PR updates how we deal with config and errors during the start of the node.
Basically, removing and refactoring Config management and responsibility of parsing, removing some Box<dyn Error> to proper error handling.

PR Checklist:

• 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
• I have added or updated tests that comprehensively prove my change is effective or that my feature works

[codecov]

Codecov Report

Attention: Patch coverage is 78.78788% with 21 lines in your changes are missing coverage. Please review.

Project coverage is 70.59%. Comparing base (d8db631) to head (ab419d0).
Report is 2 commits behind head on main.

Files	Patch %	Lines
crates/topos-node/src/lib.rs	63.63%	12 Missing ⚠️
crates/topos-config/src/node.rs	81.63%	9 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #460      +/-   ##
==========================================
- Coverage   71.24%   70.59%   -0.66%     
==========================================
  Files         226      226              
  Lines       12438    12418      -20     
==========================================
- Hits         8862     8766      -96     
- Misses       3576     3652      +76     

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[gruberb]

Some minor naming changes.