Update to 1.19.2

[Catzy44]

Description

ye ye, I saw the other pr, but it was too late, I was already done ;p
stb stopped working in 1.19.x because of removed dependency (apache commons-lang).
I was bored so i did some boilerplating and recreated all apache.lang methods used in plugin and put them into helpers package, inclucing these nasty Validator class.
everyting is working, using it on my public server.

Changes

redirected apache.commons.lang imports to classes inside helpers package
changed protection manager argument to instance of the plugin

Related Issues

(n/d)

Checklist

• [y] I have fully tested the proposed changes and promise that they will not break everything into chaos.
• [y] I followed the existing code standards and didn't mess up the formatting.
• [y] I did my best to add documentation to any public classes or methods I added.
• [y] I have added Nonnull and Nullable annotations to my methods to indicate their behaviour for null values

[HanPiRen]

any news?