Feat add support for v3 transactions

[JordyRo1]

Resolves #82

Changes

• ENABLE_STRK_FEES variable defined as environnement variable.
• Define auto_estimate and l1_resource_bounds for required functions ( if ENABLE_STRK_FEES is True, the user will have to provide either auto_estimate or l1_resource_bounds for the publish to occur.

Questions

• A small issue is that for the publish_many function we set the auto_estimate to True, to avoid working with fees. However, as shown here, the documentation suggests that it is not recommended to use auto_estimate, since it can lead to more fees.

[codecov]

Codecov Report

Attention: Patch coverage is 17.64706% with 14 lines in your changes missing coverage. Please review.

Project coverage is 37.81%. Comparing base (fd6a42b) to head (bc59f59).

Files	Patch %	Lines
pragma/core/mixins/oracle.py	7.69%	12 Missing ⚠️
pragma/core/contract.py	50.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #125      +/-   ##
==========================================
+ Coverage   37.79%   37.81%   +0.02%     
==========================================
  Files          47       47              
  Lines        3032     3033       +1     
==========================================
+ Hits         1146     1147       +1     
  Misses       1886     1886              

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