add turbo colormap

Author: nmwsharp

include/polyscope/render/color_maps.h

@@ -30,6 +30,7 @@ bool buildColormapSelector(std::string& cm, std::string fieldname = "##colormap_
 //      - spectral (CM_SPECTRAL)
 //      - rainbow (CM_RAINBOW)
 //      - jet (CM_JET)
+//      - turbo (CM_TURBO)
 //
 //    Cyclic:
 //      - phase (CM_PHASE)

include/polyscope/render/colormap_defs.h

@@ -17,6 +17,7 @@ extern const std::vector<glm::vec3> CM_PIYG;
 extern const std::vector<glm::vec3> CM_SPECTRAL;
 extern const std::vector<glm::vec3> CM_RAINBOW;
 extern const std::vector<glm::vec3> CM_JET;
+extern const std::vector<glm::vec3> CM_TURBO;
 extern const std::vector<glm::vec3> CM_REDS;
 extern const std::vector<glm::vec3> CM_PHASE;