Add harness runners for the four panels on the bench today

GDEQ0426T82, GDEQ0583T31 (both monochrome, fit the existing run_harness
template directly), and GDEY029F51/GDEY0579F51 (4-color, traced clean
through the same writeImage(black,color,...)+refresh(false) path - wire
packing for the extra color bits not yet analyzed).

tools/gxepd2_harness/run_290c_gdey029f51.cpp

@@ -0,0 +1,8 @@
+#include "run_harness.h"
+
+#include "epd4c/GxEPD2_290c_GDEY029F51.h"
+
+int main() {
+  run_harness<GxEPD2_290c_GDEY029F51>("GxEPD2_290c_GDEY029F51");
+  return 0;
+}

tools/gxepd2_harness/run_426_gdeq0426t82.cpp

@@ -0,0 +1,8 @@
+#include "run_harness.h"
+
+#include "gdeq/GxEPD2_426_GDEQ0426T82.h"
+
+int main() {
+  run_harness<GxEPD2_426_GDEQ0426T82>("GxEPD2_426_GDEQ0426T82");
+  return 0;
+}

tools/gxepd2_harness/run_579c_gdey0579f51.cpp

@@ -0,0 +1,8 @@
+#include "run_harness.h"
+
+#include "epd4c/GxEPD2_579c_GDEY0579F51.h"
+
+int main() {
+  run_harness<GxEPD2_579c_GDEY0579F51>("GxEPD2_579c_GDEY0579F51");
+  return 0;
+}

tools/gxepd2_harness/run_583_gdeq0583t31.cpp

@@ -0,0 +1,8 @@
+#include "run_harness.h"
+
+#include "gdeq/GxEPD2_583_GDEQ0583T31.h"
+
+int main() {
+  run_harness<GxEPD2_583_GDEQ0583T31>("GxEPD2_583_GDEQ0583T31");
+  return 0;
+}