Implementing usage of forbidden_chars for file/folder uploads

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### Feature description
Hi Android Team,

there is a forbidden_characters=[....] feature in the WebUI that disallows the usage for renaming/uploading/moving of files & folders with specific characters that are forbidden.
Could we also implement this in the Android Client so that it is in sync with the frontend?

- https://github.com/nextcloud/server/pull/40585
- https://github.com/nextcloud/server/issues/38614
- https://github.com/nextcloud/server/issues/43423

Thank you for your effort! :)