refactor(file-storage-utils): kotlin

[alperozturk96]

No description provided.

[github-actions]

Codacy

SpotBugs

Category	Base	New
Bad practice	30	30
Correctness	54	53
Dodgy code	177	175
Experimental	1	1
Malicious code vulnerability	2	2
Multithreaded correctness	26	26
Performance	35	32
Security	16	16
Total	341	335

[github-actions]

📱 QA build

Download	app-qa-debug.apk
QR code	Open the QR code for this download
Commit	c9e961b
Version	17793
Available until	7 days after this build

The QA build installs alongside a released Nextcloud app, so you can keep
using your existing install while testing.

Downloading the file requires a GitHub account, so open this link on the
device you want to test on, or transfer the APK to it.

[codecov]

Codecov Report

❌ Patch coverage is 53.04659% with 131 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...ava/com/owncloud/android/utils/FileStorageUtils.kt	47.58%	103 Missing and 27 partials ⚠️
...va/com/owncloud/android/utils/StandardDirectory.kt	96.77%	1 Missing ⚠️

📢 Thoughts on this report? Let us know!

[daniele-verducci]

For testing: upload/download file, autoupload, change storage directory, delete/rename sync file, conflicts resolution