Reimplement "Dynamic E-Ink" as a derived class (#3316)

Co-authored-by: Ben Meadors <benmmeadors@gmail.com>

variants/heltec_wireless_paper_v1/platformio.ini

@@ -8,6 +8,12 @@ build_flags =
   -D EINK_DISPLAY_MODEL=GxEPD2_213_BN
   -D EINK_WIDTH=250
   -D EINK_HEIGHT=122
+  -D USE_EINK_DYNAMICDISPLAY            ; Enable Dynamic EInk
+  -D EINK_LIMIT_FASTREFRESH=5           ; How many consecutive fast-refreshes are permitted
+  -D EINK_LIMIT_RATE_BACKGROUND_SEC=30  ; Minimum interval between BACKGROUND updates
+  -D EINK_LIMIT_RATE_RESPONSIVE_SEC=1   ; Minimum interval between RESPONSIVE updates
+  -D EINK_LIMIT_GHOSTING_PX=2000        ; (Optional) How much image ghosting is tolerated
+  ;-D EINK_BACKGROUND_USES_FAST          ; (Optional) Use FAST refresh for both BACKGROUND and RESPONSIVE, until a limit is reached.
 lib_deps =
   ${esp32s3_base.lib_deps}
   https://github.com/meshtastic/GxEPD2/