Added more lint checks and fixed some warnings.

Please check if the PR fulfills these requirements

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[X] The PR has no duplicates (please search among the Pull Requests before creating one)
[X] The PR follows our contributing guidelines
[ ] Tests for the changes have been added (for bug fixes / features)
[ ] Docs have been added / updated (for bug fixes / features)
[ ] UPGRADING.md has been updated with a migration guide (for breaking changes)
[ ] configuration.schema.json updated if new parameters are added.

What kind of change does this PR introduce?

The biggest part of this PR is fixing small Printf-style formatting errors in the translations, previously those imperfections were very subtle to detect because they are tricky to do right and the linter was silenced.
Eliminated an unreachable block of code
Enabled a lot of other minor lint checks

What is the current behavior?

No change

What is the new behavior?

Does this PR introduce a breaking change, and is titled accordingly?

Other information

Codecov Report

Attention: Patch coverage is 53.13433% with 471 lines in your changes are missing coverage. Please review.

Project coverage is 70.26%. Comparing base (ba19a2d) to head (7a20b71). Report is 1 commits behind head on master.

Files	Patch %	Lines
internal/arduino/cores/packagemanager/loader.go	3.84%	25 Missing :warning:
.../arduino/cores/packagemanager/install_uninstall.go	42.85%	24 Missing :warning:
commands/cmderrors/cmderrors.go	42.10%	22 Missing :warning:
commands/instances.go	18.51%	22 Missing :warning:
internal/arduino/builder/sizer.go	15.00%	17 Missing :warning:
internal/cli/lib/search.go	45.16%	17 Missing :warning:
internal/arduino/cores/packagemanager/profiles.go	20.00%	16 Missing :warning:
commands/service_upload.go	48.00%	13 Missing :warning:
...al/arduino/cores/packagemanager/package_manager.go	40.00%	12 Missing :warning:
internal/arduino/cores/status.go	0.00%	12 Missing :warning:
... and 93 more

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #2610 +/- ## ========================================== - Coverage 70.30% 70.26% -0.04% ========================================== Files 222 222 Lines 21262 21262 ========================================== - Hits 14948 14940 -8 - Misses 5131 5147 +16 + Partials 1183 1175 -8 ``` | [Flag](https://app.codecov.io/gh/arduino/arduino-cli/pull/2610/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=arduino) | Coverage Δ | | |---|---|---| | [unit](https://app.codecov.io/gh/arduino/arduino-cli/pull/2610/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=arduino) | `70.26% <53.13%> (-0.04%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=arduino#carryforward-flags-in-the-pull-request-comment) to find out more.

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arduino / arduino-cli