Minor optimizations (Const to unmodified string parameters)

[TommiPrami]

Summary by Bito

• This pull request introduces minor optimizations by changing function parameters from mutable types to 'const' for several functions across multiple files.
• These changes aim to enhance performance and maintainability by preventing unnecessary copies of data.
• Overall, the modifications contribute to cleaner and more efficient code without altering the existing functionality.

[TommiPrami]

Missed one more...