VFS could benefit from capability detection so that clients is aware of what a filesystem source is capable of.

This would allow for adding extensions on the client that are context aware, like pagination and archives.

Split out from discussions in:

• Improve serialization of VFS URL query parameters osjs-client#165
• Improve unserialization of VFS URL query parameters osjs-server#56

Work done on this:

• Fix unused options in readdir system VFS adapter osjs-client#164
• Support serialization of url query parameters osjs-client#182
• Add VFS capabilities method osjs-client#186
• Add VFS capability caching osjs-client#188
• Add VFS context aware sorting osjs-client#189
• VFS Archive support osjs-client#190
• Support unserialization of url query parameters osjs-server#63
• Add VFS capabilities method osjs-server#65
• Add totalSize and totalCount values to VFS stats osjs-server#66
• VFS Archive support osjs-server#67
• Adding pagination capability osjs-filemanager-application#37

Pending:

• VFS Archive support osjs-server#64
• VFS Archive support osjs-client#184
• Unzip option for zip files osjs-filemanager-application#39

Relevant:

• Support VFS methods with no argument #788
• Add option interface for VFS readdir osjs-client#163
• Gradual fetching of data by scrolling down in File Manger Application osjs-client#166