Replace all mentions of "targets" with "artifacts"

[MVrachev]

We want to use "targets" only in three cases:

• the top-level metadata role
• custom target delegation or targets bin role(s)
• when we mention "target files"

This is necessary as currently, we make mistakes in our code which results in messages to the user referring to "artifacts" as "targets".

Signed-off-by: Martin Vrachev martin.vrachev@broadcom.com

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 100.00%. Comparing base (714a29d) to head (adb4b1e). Report is 13 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #475 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 15 15 Lines 1071 1124 +53 ========================================= + Hits 1071 1124 +53 ```

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[kairoaraujo]

Merging as breaking changes