refactor(tier4_screen_capture_rviz_plugin): apply clang-tidy

[h-ohta]

Signed-off-by: h-ohta hiroki.ota@tier4.jp

Description

• apply clang-tidy whose fixed are easy to confirm

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Post-review checklist for the PR author

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[codecov]

Codecov Report

Merging #1649 (5b30e50) into main (5b30e50) will not change coverage.
The diff coverage is n/a.

❗ Current head 5b30e50 differs from pull request most recent head 1fddd35. Consider uploading reports for the commit 1fddd35 to get more accurate results

@@           Coverage Diff           @@
##             main    #1649   +/-   ##
=======================================
  Coverage   10.42%   10.42%           
=======================================
  Files        1218     1218           
  Lines       87416    87416           
  Branches    20452    20452           
=======================================
  Hits         9112     9112           
  Misses      68830    68830           
  Partials     9474     9474           

Flag	Coverage Δ
total	10.40% <0.00%> (ø)

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