Support multiple workspace, profile, and flow params

[azriel91]

Closes #45.
Needed for #35.

[codecov]

Codecov Report

Base: 89.82% // Head: 91.01% // Increases project coverage by +1.19% 🎉

Coverage data is based on head (c3a1f90) compared to base (ad8c6d2).
Patch coverage: 98.76% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #63      +/-   ##
==========================================
+ Coverage   89.82%   91.01%   +1.19%     
==========================================
  Files         158      166       +8     
  Lines        9147     9730     +583     
==========================================
+ Hits         8216     8856     +640     
+ Misses        931      874      -57     

Impacted Files	Coverage Δ
crate/resources/src/internal/flow_params_file.rs	100.00% <ø> (ø)
...rate/resources/src/internal/profile_params_file.rs	100.00% <ø> (ø)
...te/resources/src/internal/workspace_params_file.rs	100.00% <ø> (ø)
crate/rt_model_native/src/error.rs	50.00% <ø> (ø)
workspace_tests/src/resources/states.rs	95.55% <ø> (ø)
...t_model_core/src/cmd_context_params/flow_params.rs	86.36% <86.36%> (ø)
...odel_core/src/cmd_context_params/profile_params.rs	86.36% <86.36%> (ø)
...el_core/src/cmd_context_params/workspace_params.rs	86.36% <86.36%> (ø)
crate/rt_model_native/src/native_storage.rs	67.60% <96.15%> (-9.52%)	⬇️
...orkspace_tests/src/rt_model/states_deserializer.rs	98.70% <98.70%> (ø)
... and 29 more

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