feat: added support symlinks in "list view" mode

[xelavopelk]

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Added support for symlinks for "list view" mode. Details can be found at the following link: issue.

Due to the absence of the "emblem-symbolic-link" icon, the more suitable of the existing ones was chosen - "mail-forward-symbolic".
I did a little refactoring of the "list_view" function, as it seemed too complicated to me. Some of the string generation methods have been moved to the ListViewRowBuilder abstraction. Refactoring is shallow to reduce the size of the PR.
It works in wide list mode.

It works in the list mode in an brief mode.

It works for the trash.