ENH: Add Exception type for client exceptions

src/CaosDB.jl

@@ -56,6 +56,22 @@ struct GenericCaosDBException <: CaosDBException
     code::Cint
 end
 
+"""
+Something went wrong on the client-side or the user is attempting to
+conduct an invalid operation.
+"""
+struct ClientException <: CaosDBException
+    msg::String
+    code::Cint
+
+    function ClientException(message::AbstractString)
+        client_error_code =
+            ccall((:caosdb_status_code_OTHER_CLIENT_ERROR, CaosDB.library_name), Cint, ())
+        new(message, client_error_code)
+    end
+end
+
+
 Base.showerror(io::IO, e::CaosDBException) =
     print(io, "CaosDBException: ", e.msg, " (Status code ", e.code, ")")