chore: jwt: SAST (sonar) Fixes

[kingthorin]

• JWTActiveScanRule > Removed unnecessary constructor.
• JWTConfiguration > Properly create logger. Remove unnecessary brackets, and use isEmpty for Set content check.
• JWTConstants > Create a constant for the component regex. Use diamond operator.
• JWTExtension > Remove overridden method that simply uses a call to the super method anyway.
• JWTFuzzPanelView > Use SwingConstants where applicable. Use lambdas for anonymous inner classes. Remove unnecessary brackets.
• JWTHolder > Don't use intermediate assignment when returning.
• JWTI18n > Add private constructor to hide the implicit public one.
• JWTMessageLocation > Remove duplicate condition.
• JWTOptionsPanel > Use lambda for anonymous inner class.
• JWTUIUtils > Add private constructor to hide the implicit public one.
• JWTUtils > Add private constructor to hide the implicit public one.
• SignatureAttack > Remove unnecessary throws declaration. Actually throw the constructed exception.

Note this seemed to build fine, but I don't have any kind of testing environment.

Signed-off-by: kingthorin kingthorin@users.noreply.github.com

[kingthorin]

With SonarLint in Eclipse.

• https://marketplace.eclipse.org/content/sonarlint
• https://www.sonarlint.org/eclipse

[kingthorin]

Addressed all those.

[preetkaran20]

Thank you @kingthorin

[kingthorin]

No problem, happy to help!