Fix checkstyle issues

Description

refactor: fix more checkstyle violations

• manually fixed remaining issues
• used regex replace for some constants
• reordered overloaded methods next to each other
• renamed more variables
• adjusted lines that couldn't be automatically split
• more fixes

How to test

You can run the checks and play around with the rules yourself.

Author's checklist

• I have followed the contribution guidelines
• This MR has been tested or does not change functionality
• I have added relevant merge request dependencies (if this MR has any)
• I have added the correct labels
• I have assigned reviewers (if any are relevant)
• I have edited the documentation (if the changes require it) or I have noted the need for the change if I do not have access to the documentation
• I have marked all introduced BREAKING CHANGES or necessary DEPLOYMENT NOTES in the commit message(s)

Reviewer's checklist

• This MR has been tested or does not change functionality
• This MR has correct commit message format

Other information

Read here

Related issues

TODO: Add relevant issue numbers in the following format (will be added automatically if the MR branch follows our branch naming conventions):

• closes STR-XXX, closes STR-YYY for issues fully resolved by this MR, or
• re STR-XXX, STR-YYY for issues only partially resolved by this MR

Re STR-1148