Various improvements and fixes (#128)

- Fix for display orientation assumption in Display app
- Update logo (added colours)
- Fix for double stopping the Files app
- Deny registration of apps and services that are already registered
- Updated `ideas.md` for these changes
- Other cleanup

Buildscripts/logo.cmake

@@ -0,0 +1,44 @@
+get_filename_component(VERSION_TEXT_FILE version.txt ABSOLUTE)
+
+file(READ ${VERSION_TEXT_FILE} TACTILITY_VERSION)
+
+if (DEFINED ENV{ESP_IDF_VERSION})
+    set(TACTILITY_TARGET "   @ ESP-IDF")
+else()
+    set(TACTILITY_TARGET "  @ Simulator")
+endif()
+
+if(NOT WIN32)
+    string(ASCII 27 Esc)
+    set(ColourReset "${Esc}[m")
+    set(Cyan        "${Esc}[36m")
+    set(Grey        "${Esc}[37m")
+    set(LightPurple "${Esc}[1;35m")
+    set(White       "${Esc}[1;37m")
+else()
+    set(ColourReset "")
+    set(Cyan        "")
+    set(Grey        "")
+    set(LightPurple "")
+    set(White       "")
+endif()
+
+# Some terminals (e.g. GitHub Actions) reset colour for every in a multiline message(),
+# so we add the colour to each line instead of assuming it would automatically be re-used.
+message("\n\n\
+                      ${LightPurple}@@\n\
+                     ${LightPurple}@@@\n\
+                     ${LightPurple}@@@\n\
+                     ${LightPurple}@@@\n\
+                     ${LightPurple}@@@\n\
+     ${Cyan}@@@@@@@@@@@@@@@@${LightPurple}@@@\n\
+    ${Cyan}@@@@@@@@@@@@@@@@@${LightPurple}@@@\n\
+              ${Cyan}@@@    ${LightPurple}@@@                 ${White}Tactility ${TACTILITY_VERSION}\n\
+              ${Cyan}@@@    ${LightPurple}@@@                 ${Grey}${TACTILITY_TARGET}\n\
+              ${Cyan}@@@${LightPurple}@@@@@@@@@@@@@@@@@\n\
+              ${Cyan}@@@${LightPurple}@@@@@@@@@@@@@@@@\n\
+              ${Cyan}@@@\n\
+              ${Cyan}@@@\n\
+              ${Cyan}@@@\n\
+              ${Cyan}@@@\n\
+              ${Cyan}@@\n\n${ColourReset}")