fix(nodes): prevent nil pointers in node parsing

[pauloavelar]

Summary

• Add constructors for Node that fill the decoder reference
• Add safe getter for binary parser (ByteOrder) to prevent nil pointer panics

Checklist

• I have added code related to the library scope that does not focus on a specific use case.
• I have not added a new dependency, or the code owners have agreed to it.
• I have written tests for the new code, or the existing tests cover it completely.
• I have not added // nolint comments to the code to fix linter issues.
• I have not changed configuration files (CI, lint, templates, etc) without authorization.

[codecov]

Codecov Report

Base: 100.00% // Head: 100.00% // No change to project coverage 👍

Coverage data is based on head (cf34830) compared to base (fd30700).
Patch coverage: 100.00% of modified lines in pull request are covered.

❗ Current head cf34830 differs from pull request most recent head cc2225f. Consider uploading reports for the commit cc2225f to get more accurate results

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #23   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            7         7           
  Lines          160       180   +20     
=========================================
+ Hits           160       180   +20     

Impacted Files	Coverage Δ
tlv/decoder.go	100.00% <100.00%> (ø)
tlv/node.go	100.00% <100.00%> (ø)
tlv/standard.go	100.00% <100.00%> (ø)

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