fix: flip readUV elem index and time arguments

The API specifies them in this order, and in other endpoints the time t
is usually after aid (archive id)

src/Fvcom.fs

@@ -194,7 +194,7 @@ module Siglay =
             Log.Error $"{e}"
             Array2D.zeroCreate 0 0
 
-    let readUv (ds: DataSet) e t =
+    let readUv (ds: DataSet) t e =
         try
             let l = ds.Dimensions["siglay"].Length
             let u = ds[ "u" ].GetData([| t; 0; e |], [| 1; l; 1 |]) :?> single [,,]
@@ -206,7 +206,7 @@ module Siglay =
             Log.Error $"{err}"
             Array.empty
 
-    let readUv' (ds: DataSet) e t =
+    let readUv' (ds: DataSet) t e =
         try
             let l = ds.Dimensions["siglay"].Length
             let u = ds[ "u" ].GetData([| t; 0; e |], [| 1; l; 1 |]) :?> single [,,]