fix file name of voice recording

[sowjanyakch]

Fix #1564

• Filter out special chars which are not allowed on the filesystem, e.g. /, \ and : and replace them with a space
• Replace multiple spaces with 1 space
• Make sure the full filename is not exceeding 150 chars, so trim the name to 146 chars before ammending the filesuffix

🚧 TODO

• ...

🏁 Checklist

• ⛑️ Tests (unit and/or integration) are included or not needed
• 🔖 Capability is checked or not needed
• 🔙 Backport requests are created or not needed: /backport to stable-xx.x
• 📅 Milestone is set
• 🌸 PR title is meaningful (if it should be in the changelog: is it meaningful to users?)

[github-actions]

Codacy

Lint

Type	master	PR
Warnings	86	96
Errors	131	131

SpotBugs

Category	Base	New
Bad practice	6	6
Correctness	11	11
Dodgy code	79	79
Internationalization	3	3
Malicious code vulnerability	3	3
Performance	6	6
Security	1	1
Total	109	109

Lint increased!

[mahibi]

the max length is set to 146 instead 150 because of the suffix ".mp3". This is not obvious in the FileUtils class and may lead to confusion. So i suggest to define the max length inside MediaRecorderManager and call it "VOICE_MESSAGE_PREFIX_MAX_LENGTH"

[github-actions]

APK file: https://www.kaminsky.me/nc-dev/android-artifacts/4281-talk.apk



To test this change/fix you can simply download above APK file and install and test it in parallel to your existing Nextcloud Talk app.