Add icons, messages, elapsed time to CLI progress bars

[azriel91]

Closes #102.

• Add icons, messages, elapsed time to CLI progress bars
• Send progress updates in app_cycle example item specs.
• Tar X item spec does not include directories in FileMetadatas.

Before:

After:

[codecov]

Codecov Report

Patch coverage: 90.73% and project coverage change: +0.02 🎉

Comparison is base (52c2575) 93.47% compared to head (6284159) 93.50%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #103      +/-   ##
==========================================
+ Coverage   93.47%   93.50%   +0.02%     
==========================================
  Files         274      274              
  Lines       19957    20155     +198     
==========================================
+ Hits        18654    18845     +191     
- Misses       1303     1310       +7     

Impacted Files	Coverage Δ
crate/core/src/progress/progress_update.rs	100.00% <ø> (ø)
crate/core/src/progress/progress_update_and_id.rs	100.00% <ø> (ø)
item_specs/tar_x/src/tar_x_error.rs	0.00% <ø> (ø)
...tem_specs/tar_x/src/tar_x_state_current_fn_spec.rs	57.14% <15.78%> (-9.53%)	⬇️
...tem_specs/tar_x/src/tar_x_state_desired_fn_spec.rs	78.31% <66.66%> (-0.44%)	⬇️
crate/rt_model_native/src/output/cli_output.rs	84.90% <88.88%> (+3.52%)	⬆️
crate/rt/src/cmds/sub/apply_cmd.rs	81.02% <92.30%> (+0.89%)	⬆️
crate/core/src/progress/progress_msg_update.rs	100.00% <100.00%> (ø)
crate/core/src/progress/progress_sender.rs	100.00% <100.00%> (ø)
crate/core/src/progress/progress_tracker.rs	100.00% <100.00%> (ø)
... and 5 more

... and 3 files with indirect coverage changes

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