feat: move the init call into provider

[aelf-lxy]

move the init call into provider

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.76%. Comparing base (566ed4f) to head (78a1b17).
Report is 9 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #194   +/-   ##
=======================================
  Coverage   89.76%   89.76%           
=======================================
  Files          21       21           
  Lines         215      215           
  Branches       70       70           
=======================================
  Hits          193      193           
  Misses          8        8           
  Partials       14       14           

Flag	Coverage Δ
unittests	89.76% <ø> (ø)

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