LoadCombination Reading does not take in to account mulitple lines per loadcase

#### Description:

When a LoadCombination has multiple lines it results in an index error.

LoadCombination syntax:
```
*LOADCOMB ; Combinations
; NAME=NAME, KIND, ACTIVE, bES, iTYPE, DESC, iSERV-TYPE, nLCOMTYPE, nSEISTYPE ; line 1
; ANAL1, LCNAME1, FACT1, ... ; from line 2

```

```
NAME=Wind +V-L, GEN, ACTIVE, 0, 0, , 0, 0, 0
ST, Wind V +, 1, ST, Wind L -, 1
NAME=Ped C + N + H, GEN, ACTIVE, 0, 0, , 0, 0, 0
ST, Pedestrian Cantilever, 1, ST, Pedestrian North, 1
ST, Pedestrian Cantilever Horizontal, 1
ST, Pedestrian North Horizontal, 1

```

#### How to replicate:

1. Create multiple loadcases and combine them in to a `LoadCombination `in MidasCivil
2. Output the file as an MCT file
3. Create MidasCivil Adapter
4. Pull `LoadCombination `objects

#### Expected behaviour:

LoadCombination to be read for `LoadCombination `objects with along list of `Loadcase `objects

#### Test file(s):