Fix lightprobe creation from python data API

### Description of the problem

Until now, it is only possible to correctly add a lightprobe in python via an operator:
`bpy.ops.object.lightprobe_add()`

### Description of the proposed solution

The idea of this patch is to fix the lack of consistency lightprobe creation without operator.
It allow creation of different lightprobe type directly via `bpy.data.lightprobes.new(name, type)` (such as for curves).

In order to make it possible I had to:
1. Add a function `BKE_lightprobe_configure` in charge of lightprobe settings configuration (avoid code redundancy)
2. Allow an object to take lightprobe datablock as data during is initialization.

### A short example of this patch usage

```
lp = bpy.data.lightprobes.new('some_name','PLANAR')

bpy.data.objects.new('toto', lp)

```

Reviewed By: fclem

Differential Revision: https://developer.blender.org/D6396

1 files changed, 8 insertions, 0 deletions

diff --git a/source/blender/makesrna/intern/rna_object.c b/source/blender/makesrna/intern/rna_object.c
index 75594d1b295..a83a36fbd9d 100644
--- a/source/blender/makesrna/intern/rna_object.c
+++ b/source/blender/makesrna/intern/rna_object.c
@@ -25,6 +25,7 @@
 #include "DNA_brush_types.h"
 #include "DNA_collection_types.h"
 #include "DNA_customdata_types.h"
+#include "DNA_lightprobe_types.h"
 #include "DNA_material_types.h"
 #include "DNA_mesh_types.h"
 #include "DNA_object_force_types.h"
@@ -196,6 +197,13 @@ const EnumPropertyItem rna_enum_metaelem_type_items[] = {
     {0, NULL, 0, NULL, NULL},
 };
 
+const EnumPropertyItem rna_enum_lightprobes_type_items[] = {
+    {LIGHTPROBE_TYPE_CUBE, "CUBE", ICON_LIGHTPROBE_CUBEMAP, "Cube", ""},
+    {LIGHTPROBE_TYPE_PLANAR, "PLANAR", ICON_LIGHTPROBE_PLANAR, "Planar", ""},
+    {LIGHTPROBE_TYPE_GRID, "GRID", ICON_LIGHTPROBE_GRID, "Grid", ""},
+    {0, NULL, 0, NULL, NULL},
+};
+
 /* used for 2 enums */
 #define OBTYPE_CU_CURVE \
   { \