Fix cppcheck warnings, typos, style issues (backport #1227)

[mergify]

🦟 Bug fix

Fixes #

Summary

• Reducing CppCheck report size, frequent warnings:
  • missing override (CI-clang seems also affected by this)
  • different argument name
  • variable scope can be reduced
• Ogre or containers in standard library most of times use size_t, better to use
• Fix typos
• In general tried to follow the rule from c++ core guidelines https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#c128-virtual-functions-should-specify-exactly-one-of-virtual-override-or-final (but changing it in all code could make PR much bigger)
• Will left comments about some specific lines
• This PR contain only non-breaking changes. Will left separate comment with couple of questions

I'm running CppCheck with compile_commands.json file which generated by cmake -DCMAKE_EXPORT_COMPILE_COMMANDS=ON (and manual path tweak to run scan on host), not make cppcheck

Checklist

• Signed all commits for DCO
• Added tests
• Updated documentation (as needed)
• Updated migration guide (as needed)
• Consider updating Python bindings (if the library has them)
• codecheck passed (See contributing)
• All tests passed (See test coverage)
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This is an automatic backport of pull request #1227 done by Mergify.