Compiler: Ignore clippy warnings in gencode and release ttrpc-compiler:v0.6.2

[codecov[bot]]

Codecov Report

Patch and project coverage have no change.

Comparison is base (e16aa7b) 24.35% compared to head (f4bac5b) 24.35%. Report is 3 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #210 +/- ## ======================================= Coverage 24.35% 24.35% ======================================= Files 16 16 Lines 2652 2652 ======================================= Hits 646 646 Misses 2006 2006 ```

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[jsturtevant]

LGTM