Hairibar.EngineExtensions is mostly a collection of utility and extension functions that I have written for Unity over time. You are free to use this package, though keep in mind that this is a personal library that may change substantially.
Add the following dependencies to your manifest.json:
{
"dependencies": {
...
"com.dbrizov.naughtyattributes": "https://github.com/dbrizov/NaughtyAttributes.git#v2.1.1",
"com.hairibar.naughtyextensions": "https://github.com/hairibar/Hairibar.NaughtyExtensions.git#v1.3.0",
"com.hairibar.engineextensions": "https://github.com/hairibar/Hairibar.EngineExtensions.git#upm"
...
}
}