Include cstdint and Point.hpp where the new code uses uint8_t and Vec2f

The clang-tidy job checks include-what-you-use on changed lines, and the three
files it named relied on a transitive include for a symbol the new code
introduced.

src/slic3r/GUI/Jobs/TextureDisplacementBakeJob.cpp

@@ -8,6 +8,7 @@
 #include "libslic3r/TextureDisplacement.hpp"
 #include <exception>
 #include <cstddef>
+#include <cstdint>
 #include "slic3r/GUI/Jobs/Worker.hpp"
 #include <memory>
 

src/slic3r/GUI/Jobs/TextureDisplacementDebugJob.cpp

@@ -17,6 +17,7 @@
 #include "slic3r/GUI/Jobs/Worker.hpp"
 #include <memory>
 #include "libslic3r/ObjectID.hpp"
+#include "libslic3r/Point.hpp"
 #include "libslic3r/TriangleMesh.hpp"
 
 namespace Slic3r::GUI {

src/slic3r/GUI/Jobs/TextureDisplacementPrepareJob.hpp

@@ -9,6 +9,7 @@
 #include "Job.hpp"
 
 #include "libslic3r/ObjectID.hpp"
+#include "libslic3r/Point.hpp"
 #include "libslic3r/TextureDisplacement.hpp"
 
 namespace Slic3r {