Replace several find_in_dict by hlp_desany.

[joa-quim]

Rework plt_txt_attrib()

[codecov-commenter]

Codecov Report

❌ Patch coverage is 59.18367% with 20 lines in your changes missing coverage. Please review.
✅ Project coverage is 86.23%. Comparing base (22397fa) to head (aabf1e3).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/psxy.jl	55.55%	20 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1788      +/-   ##
==========================================
+ Coverage   86.20%   86.23%   +0.02%     
==========================================
  Files         167      167              
  Lines       24336    24345       +9     
==========================================
+ Hits        20980    20994      +14     
+ Misses       3356     3351       -5     

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