fix pedantic clippies

[andrewdavidmackenzie]

Title says it all

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 76.31258% with 194 lines in your changes are missing coverage. Please review.

Project coverage is 88%. Comparing base (e9ce730) to head (228581a). Report is 22 commits behind head on master.

Files	Patch %	Lines
flowr/src/bin/flowrgui/main.rs	57%	76 Missing :warning:
flowr/src/bin/flowrgui/gui/debug_client.rs	0%	45 Missing :warning:
flowr/src/bin/flowrcli/cli/cli_debug_client.rs	49%	23 Missing :warning:
flowr/src/lib/debugger.rs	54%	13 Missing :warning:
flowcore/src/model/io.rs	42%	7 Missing :warning:
flowr/src/bin/flowrgui/tabs.rs	38%	5 Missing :warning:
flowr/src/bin/flowrex/main.rs	0%	4 Missing :warning:
flowr/src/lib/executor.rs	94%	3 Missing :warning:
flowc/src/bin/flowc/flow_compile.rs	88%	2 Missing :warning:
flowc/src/bin/flowc/main.rs	90%	2 Missing :warning:
... and 13 more

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #2178 +/- ## ====================================== - Coverage 88% 88% -0% ====================================== Files 151 151 Lines 18265 18315 +50 ====================================== + Hits 16052 16083 +31 - Misses 2213 2232 +19 ```

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