UI: make many modifier strings translatable

This includes:
- new modifier names

It mostly uses `N_` because the strings are actually translated elsewhere.
The goal is simply to export them to .po files.

Most of the new translations were reported in T43295#1105335.

Reviewed By: mont29

Differential Revision: https://developer.blender.org/D15418

source/blender/modifiers/intern/MOD_volume_to_mesh.cc

@@ -12,6 +12,8 @@
 #include "BKE_volume.h"
 #include "BKE_volume_to_mesh.hh"
 
+#include "BLT_translation.h"
+
 #include "MOD_modifiertypes.h"
 #include "MOD_ui_common.h"
 
@@ -193,7 +195,7 @@ static Mesh *modifyMesh(ModifierData *md, const ModifierEvalContext *ctx, Mesh *
 }
 
 ModifierTypeInfo modifierType_VolumeToMesh = {
-    /* name */ "Volume to Mesh",
+    /* name */ N_("Volume to Mesh"),
     /* structName */ "VolumeToMeshModifierData",
     /* structSize */ sizeof(VolumeToMeshModifierData),
     /* srna */ &RNA_VolumeToMeshModifier,