feat: matrix stream example

platformio.ini

@@ -121,3 +121,24 @@ build_src_filter =
     +<src/spore/types/*.cpp>
     +<src/spore/util/*.cpp>
     +<src/internal/*.cpp>
+
+[env:pixelstream_d1]
+platform = platformio/espressif8266@^4.2.1
+board = d1_mini
+framework = arduino
+upload_speed = 115200
+monitor_speed = 115200
+board_build.filesystem = littlefs
+board_build.flash_mode = dout
+board_build.ldscript = eagle.flash.1m256.ld
+lib_deps = ${common.lib_deps}
+    adafruit/Adafruit NeoPixel@^1.15.1
+build_flags = -DPIXEL_PIN=TX -DPIXEL_COUNT=256 -DMATRIX_WIDTH=16
+build_src_filter = 
+    +<examples/pixelstream/*.cpp>
+    +<src/spore/*.cpp>
+    +<src/spore/core/*.cpp>
+    +<src/spore/services/*.cpp>
+    +<src/spore/types/*.cpp>
+    +<src/spore/util/*.cpp>
+    +<src/internal/*.cpp>