fix(nano): API was not processing initialize method correctly

[jansegre]

Motivation

Blueprint endpoint was always returning empty arguments for initialize method.

Acceptance Criteria

• Update test so the issue can show up
• Use inspect.signature instead of inspect.getfullargspec because it can properly take into account wrapped functions

Checklist

• If you are requesting a merge into master, confirm this code is production-ready and can be included in future releases as soon as it gets merged

[github-actions]

Bencher Report

Branch	fix/nano/blueprint-resource-initialize-method
Testbed	ubuntu-22.04

🚨 1 Alert

Benchmark	Measure Units	View	Benchmark Result (Result Δ%)	Upper Boundary (Limit %)
sync-v2 (up to 20000 blocks)	Latency minutes (m)	📈 plot 🚷 threshold 🚨 alert (🔔)	2.11 m (+23.29%) Baseline: 1.71 m	2.05 m (102.74%)

Click to view all benchmark results

Benchmark	Latency	Benchmark Result minutes (m) (Result Δ%)	Lower Boundary minutes (m) (Limit %)	Upper Boundary minutes (m) (Limit %)
sync-v2 (up to 20000 blocks)	📈 view plot 🚷 view threshold 🚨 view alert (🔔)	2.11 m (+23.29%) Baseline: 1.71 m	1.54 m (73.00%)	2.05 m (102.74%)

🐰 View full continuous benchmarking report in Bencher

[codecov]

Codecov Report

❌ Patch coverage is 75.00000% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 85.82%. Comparing base (297959c) to head (db25eaa).
⚠️ Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
hathor/nanocontracts/resources/blueprint.py	75.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1433      +/-   ##
==========================================
- Coverage   85.83%   85.82%   -0.02%     
==========================================
  Files         431      431              
  Lines       33278    33264      -14     
  Branches     5225     5213      -12     
==========================================
- Hits        28564    28548      -16     
  Misses       3673     3673              
- Partials     1041     1043       +2     

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