feat: Add setSLMImage and loadSLMSequence

[tlambert03]

for now, inputs must be valid arrays, not lists of char

[codecov]

Codecov Report

Attention: Patch coverage is 12.82051% with 34 lines in your changes missing coverage. Please review.

Project coverage is 23.90%. Comparing base (5d07876) to head (285f8ef).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/_pymmcore_nano.cc	12.82%	32 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #30      +/-   ##
==========================================
- Coverage   24.18%   23.90%   -0.28%     
==========================================
  Files          90       90              
  Lines        6670     6701      +31     
  Branches     3492     3508      +16     
==========================================
- Hits         1613     1602      -11     
- Misses       3740     3808      +68     
+ Partials     1317     1291      -26     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.