feat(render): style, GLSL line/text pipelines, staging batches, bitmap font

tests/CMakeLists.txt

@@ -28,6 +28,7 @@ add_executable(plot_tests
   main.cpp
   test_transform.cpp
   test_gl_context.cpp
+  test_primitives.cpp
   test_ring_buffer.cpp
   test_minmax_pyramid.cpp
   test_series.cpp