Test cli

[DiamondJoseph]

Part of #198

For discussion: What should putting a task with invalid parameters, or putting a task that does not exist do?

Dependent on #202

[codecov]

Codecov Report

Merging #230 (c0b9874) into main (ea63806) will increase coverage by 1.25%.
The diff coverage is 96.87%.

@@            Coverage Diff             @@
##             main     #230      +/-   ##
==========================================
+ Coverage   88.57%   89.82%   +1.25%     
==========================================
  Files          41       41              
  Lines        1339     1347       +8     
==========================================
+ Hits         1186     1210      +24     
+ Misses        153      137      -16     

Impacted Files	Coverage Δ
src/blueapi/service/main.py	92.59% <94.44%> (+10.31%)	⬆️
src/blueapi/utils/base_model.py	100.00% <100.00%> (ø)
src/blueapi/worker/reworker.py	94.95% <100.00%> (+0.04%)	⬆️
src/blueapi/worker/task.py	100.00% <100.00%> (ø)

... and 1 file with indirect coverage changes

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