feat(emit): make text param in open_stream() optional

[tigarmo]

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[codecov[bot]]

Codecov Report

Merging #194 (97e2698) into main (aa9e81b) will increase coverage by 0.00%. The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #194   +/-   ##
=======================================
  Coverage   94.70%   94.70%           
=======================================
  Files           7        7           
  Lines        1057     1058    +1     
  Branches      192      193    +1     
=======================================
+ Hits         1001     1002    +1     
  Misses         53       53           
  Partials        3        3           

Files	Coverage Δ
craft_cli/messages.py	100.00% <100.00%> (ø)