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

TactilityHeadless/Private/EspPartitions_i.h

@@ -6,7 +6,7 @@
 
 namespace tt {
 
-esp_err_t initEspPartitions();
+esp_err_t initPartitionsEsp();
 
 } // namespace
 

TactilityHeadless/Private/service/ServiceInstance.h

@@ -20,6 +20,8 @@ public:
     const service::ServiceManifest& getManifest() const override;
     std::shared_ptr<void> getData() const override;
     void setData(std::shared_ptr<void> newData) override;
+
+    std::unique_ptr<Paths> getPaths() const override;
 };
 
 }

TactilityHeadless/Private/service/ServiceInstancePaths.h

@@ -0,0 +1,28 @@
+#pragma once
+
+#include "service/ServiceInstance.h"
+
+namespace tt::service {
+
+class ServiceInstancePaths final : public Paths {
+
+private:
+
+    const ServiceManifest& manifest;
+
+public:
+
+    explicit ServiceInstancePaths(const ServiceManifest& manifest) : manifest(manifest) {}
+    ~ServiceInstancePaths() final = default;
+
+    std::string getDataDirectory() const final;
+    std::string getDataDirectoryLvgl() const final;
+    std::string getDataPath(const std::string& childPath) const final;
+    std::string getDataPathLvgl(const std::string& childPath) const final;
+    std::string getSystemDirectory() const final;
+    std::string getSystemDirectoryLvgl() const final;
+    std::string getSystemPath(const std::string& childPath) const final;
+    std::string getSystemPathLvgl(const std::string& childPath) const final;
+};
+
+}