Support format string for with_text functions

[hanjinliu]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 94.15205% with 20 lines in your changes are missing coverage. Please review.

Project coverage is 77.51%. Comparing base (94a6c1d) to head (a9ea2f1).

Files	Patch %	Lines
whitecanvas/layers/_text_utils.py	62.50%	4 Missing and 2 partials ⚠️
whitecanvas/layers/group/_offsets.py	20.00%	2 Missing and 2 partials ⚠️
whitecanvas/layers/tabular/_box_like.py	81.25%	0 Missing and 3 partials ⚠️
whitecanvas/backend/vispy/markers.py	71.42%	1 Missing and 1 partial ⚠️
whitecanvas/layers/_primitive/line.py	80.00%	1 Missing ⚠️
whitecanvas/layers/_primitive/markers.py	80.00%	1 Missing ⚠️
whitecanvas/layers/_primitive/rug.py	83.33%	1 Missing ⚠️
whitecanvas/layers/group/band_collection.py	0.00%	1 Missing ⚠️
whitecanvas/layers/group/boxplot.py	83.33%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #29      +/-   ##
==========================================
+ Coverage   71.62%   77.51%   +5.88%     
==========================================
  Files         161      162       +1     
  Lines       17814    17896      +82     
  Branches     3131     3095      -36     
==========================================
+ Hits        12760    13872    +1112     
+ Misses       4386     3285    -1101     
- Partials      668      739      +71     

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