Normalize error messages when running with insufficient privileges

[Nek-12]

problem
Currently, running notion-enhancer without root (sudo) or admin rights gives out some really cryptic and verbose messages.
solution
EACCESS exception should be handled gracefully, showing short and meaningful messages to the user without any technical experience.

See this example:

[nek@NekLinux bin]$ notion-enhancer apply
=== NOTION ENHANCEMENT LOG ===
...unpacking app.asar
### ERROR ###
Error: EACCES: permission denied, mkdir '/opt/notion-app/app'
at Object.mkdirSync (fs.js:947:3)
at Object.promisified.mkdirpSync (/usr/lib/node_modules/notion-enhancer/node_modules/asar/lib/wrapped-fs.js:24:38)
at module.exports.extractAll (/usr/lib/node_modules/notion-enhancer/node_modules/asar/lib/asar.js:177:6)
at module.exports (/usr/lib/node_modules/notion-enhancer/pkg/apply.js:60:5)
at async CAC.<anonymous> (/usr/lib/node_modules/notion-enhancer/bin.js:28:5) {
errno: -13,
syscall: 'mkdir',
code: 'EACCES',
path: '/opt/notion-app/app'
}
=== END OF LOG ===
[nek@NekLinux bin]$ sudo notion-enhancer apply
=== NOTION ENHANCEMENT LOG ===
...unpacking app.asar
...patching app launcher (notion-app linux wrappers only).
...recording enhancement version.
~~ success.
=== END OF LOG ===