Filesystem improvements and more (#148)

- Rename `assets` and `config` partitions to `system` and `data`
- Change partition type from `spiffs` to `fat`, so we can have sub-directories
- Fix crash when doing WiFi scan: Increased system event task size to 3kB. 
- Free up IRAM on ESP32 (it was required for the Core2, but I also freed up the same amount for Yellow Board)
- Introduced `Paths` objects that can be retrieved by `AppContext` and `ServiceContext`. Apps and services now have their own relative paths. Assets were re-arranged into the correct paths.
- Rename simulator window title to "Tactility"
- Refactored statusbar widget so it persists icon paths properly (it kept a const char* reference, but didn't copy it, so it crashed when the related std::string was destroyed)
- Created `Partitions.h` to expose some useful variables
- Moved USB config in various `sdkconfig`  (it was part of the "default" section, but it shouldn't be)
- Updated domain name

Tactility/Source/app/files/State.cpp

@@ -2,6 +2,8 @@
 #include "kernel/Kernel.h"
 #include "Log.h"
 #include "FileUtils.h"
+#include "Partitions.h"
+#include "hal/SdCard.h"
 
 #include <unistd.h>
 
@@ -51,17 +53,17 @@ bool State::setEntriesForPath(const std::string& path) {
         dir_entries.push_back({
             .d_ino = 0,
             .d_type = TT_DT_DIR,
-            .d_name = "assets"
+            .d_name = SYSTEM_PARTITION_NAME
         });
         dir_entries.push_back({
             .d_ino = 1,
             .d_type = TT_DT_DIR,
-            .d_name = "config"
+            .d_name = DATA_PARTITION_NAME
         });
         dir_entries.push_back({
             .d_ino = 2,
             .d_type = TT_DT_DIR,
-            .d_name = "sdcard"
+            .d_name = TT_SDCARD_MOUNT_NAME
         });
 
         current_path = path;