Function safe_app::ffi::mutable_data::entries::seq_mdata_entries_insert

#[no_mangle]
pub unsafe extern "C" fn seq_mdata_entries_insert(
    app: *const App, 
    entries_h: MDataEntriesHandle, 
    key: *const u8, 
    key_len: usize, 
    value: *const u8, 
    value_len: usize, 
    user_data: *mut c_void, 
    o_cb: extern "C" fn(user_data: *mut c_void, result: *const FfiResult)
)

Insert an entry to the entries.