feat: Add File Transfer functionality with HTTP and FTP protocols

- Introduced FileTransferActivity to manage file transfer operations.
- Added ProtocolSelectionActivity for users to choose between HTTP and FTP.
- Implemented WifiSelectionActivity to handle WiFi connections for file transfers.
- Created ScheduleSettingsActivity to configure automatic file transfer scheduling.
- Integrated CrossPointFtpServer to support FTP file transfers.
- Updated main application logic to trigger scheduled file transfers.
- Enhanced SettingsActivity to include an option for file transfer scheduling.
- Improved memory management and task handling in various activities.

platformio.ini

@@ -1,3 +1,13 @@
+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; https://docs.platformio.org/page/projectconf.html
+
 [platformio]
 crosspoint_version = 0.11.2
 default_envs = default
@@ -11,49 +21,41 @@ upload_speed = 921600
 check_tool = cppcheck
 check_flags = --enable=all --suppress=missingIncludeSystem --suppress=unusedFunction --suppress=unmatchedSuppression --suppress=*:*/.pio/* --inline-suppr
 check_skip_packages = yes
-
 board_upload.flash_size = 16MB
 board_upload.maximum_size = 16777216
 board_upload.offset_address = 0x10000
-
-build_flags =
-  -DARDUINO_USB_MODE=1
-  -DARDUINO_USB_CDC_ON_BOOT=1
-  -DMINIZ_NO_ZLIB_COMPATIBLE_NAMES=1
-  -DEINK_DISPLAY_SINGLE_BUFFER_MODE=1
-  -DDISABLE_FS_H_WARNING=1
-# https://libexpat.github.io/doc/api/latest/#XML_GE
-  -DXML_GE=0
-  -DXML_CONTEXT_BYTES=1024
-  -std=c++2a
-# Enable UTF-8 long file names in SdFat
-  -DUSE_UTF8_LONG_NAMES=1
-
-; Board configuration
+build_flags = 
+	-DARDUINO_USB_MODE=1
+	-DARDUINO_USB_CDC_ON_BOOT=1
+	-DMINIZ_NO_ZLIB_COMPATIBLE_NAMES=1
+	-DEINK_DISPLAY_SINGLE_BUFFER_MODE=1
+	-DDISABLE_FS_H_WARNING=1
+	-DXML_GE=0
+	-DXML_CONTEXT_BYTES=1024
+	-std=c++2a
+	-DUSE_UTF8_LONG_NAMES=1
 board_build.flash_mode = dio
 board_build.flash_size = 16MB
 board_build.partitions = partitions.csv
-
-extra_scripts =
-  pre:scripts/build_html.py
-
-; Libraries
-lib_deps =
-  BatteryMonitor=symlink://open-x4-sdk/libs/hardware/BatteryMonitor
-  InputManager=symlink://open-x4-sdk/libs/hardware/InputManager
-  EInkDisplay=symlink://open-x4-sdk/libs/display/EInkDisplay
-  SDCardManager=symlink://open-x4-sdk/libs/hardware/SDCardManager
-  ArduinoJson @ 7.4.2
-  QRCode @ 0.0.1
+extra_scripts = 
+	pre:scripts/build_html.py
+lib_deps = 
+	BatteryMonitor=symlink://open-x4-sdk/libs/hardware/BatteryMonitor
+	InputManager=symlink://open-x4-sdk/libs/hardware/InputManager
+	EInkDisplay=symlink://open-x4-sdk/libs/display/EInkDisplay
+	SDCardManager=symlink://open-x4-sdk/libs/hardware/SDCardManager
+	ArduinoJson @ 7.4.2
+	QRCode @ 0.0.1
+	xreef/SimpleFTPServer @ 3.0.1
 
 [env:default]
 extends = base
 build_flags =
-  ${base.build_flags}
-  -DCROSSPOINT_VERSION=\"${platformio.crosspoint_version}-dev\"
+	${base.build_flags}
+	-DCROSSPOINT_VERSION=\"${platformio.crosspoint_version}-dev\"
 
 [env:gh_release]
 extends = base
 build_flags =
-  ${base.build_flags}
-  -DCROSSPOINT_VERSION=\"${platformio.crosspoint_version}\"
+	${base.build_flags}
+	-DCROSSPOINT_VERSION=\"${platformio.crosspoint_version}\"