InkHUD DIY builds for ProMicro & Heltec T114 (#7039)

* DIY InkHUD variants (ProMicro & T114)

* Fix file encoding
> We’ve detected the file encoding as ISO-8859-1. When you commit changes we will transcode it to UTF-8.

* Update comment justifying trunk suppression

variants/heltec_mesh_node_t114-inkhud/platformio.ini

@@ -0,0 +1,19 @@
+[env:heltec-mesh-node-t114-inkhud]
+board_level = extra
+extends = nrf52840_base, inkhud
+board = heltec_mesh_node_t114
+board_check = true
+build_flags = 
+  ${nrf52840_base.build_flags}
+  ${inkhud.build_flags}
+  -I variants/heltec_mesh_node_t114-inkhud
+build_src_filter = 
+  ${nrf52_base.build_src_filter} 
+  ${inkhud.build_src_filter}
+lib_deps = 
+  ${inkhud.lib_deps} ; InkHUD libs first, so we get GFXRoot instead of AdafruitGFX
+  ${nrf52840_base.lib_deps}
+  lewisxhe/PCF8563_Library@^1.0.1
+extra_scripts =
+  ${env.extra_scripts}
+  variants/diy/nrf52_promicro_diy_tcxo/custom_build_tasks.py ; Add to PIO's Project Tasks pane: preset builds for common displays