v1.4.0 upade

* Moved shade storage from NVS.  NVS storage became limited because of the wired ethernet boards.  This limited the number of potential shades to around 20.
* Added the ability to backup the shade configuration
* Added the ability to restore the shade configuration.
* Increased up. down, and tilt timing value to allow for up to 54 days of transition.  The previous 16bit value did not allow for very slow shades and was limited to just over a minute.
* UI cleanup and additional messages.
* Transceiver tuning now applies the rx bandwidth in the proper order so no reboot is required.

ConfigFile.h

@@ -0,0 +1,66 @@
+#include <ArduinoJson.h>
+#include <LittleFS.h>
+#include "Somfy.h"
+#ifndef configfile_h
+#define configfile_h
+
+#define CFG_VALUE_SEP ','
+#define CFG_REC_END '\n'
+#define CFG_TOK_NONE 0x00
+
+typedef struct config_header_t {
+  uint8_t version = 1;
+  uint16_t recordSize = 0;
+  uint16_t records = 0;
+  uint8_t length = 0;
+};
+class ConfigFile {
+  protected:
+    File file;
+    bool readOnly = false;
+    bool begin(const char *filename, bool readOnly = false);
+    uint32_t startRecPos = 0;
+    bool _opened = false;
+  public:
+    config_header_t header;
+    bool save();
+    void end();
+    bool isOpen();
+    bool seekRecordByIndex(uint16_t ndx);
+    bool readHeader();
+    bool seekChar(const char val);
+    bool writeHeader(const config_header_t &header);
+    bool writeHeader();
+    bool writeSeparator();
+    bool writeRecordEnd();
+    bool writeChar(const char val);
+    bool writeUInt8(const uint8_t val, const char tok = CFG_VALUE_SEP);
+    bool writeUInt16(const uint16_t val, const char tok = CFG_VALUE_SEP);
+    bool writeUInt32(const uint32_t val, const char tok = CFG_VALUE_SEP);
+    bool writeBool(const bool val, const char tok = CFG_VALUE_SEP);
+    bool writeFloat(const float val, const uint8_t prec, const char tok = CFG_VALUE_SEP);
+    bool readString(char *buff, size_t len);
+    bool writeString(const char *val, size_t len, const char tok = CFG_VALUE_SEP);
+    char readChar(const char defVal = '\0');
+    uint8_t readUInt8(const uint8_t defVal = 0);
+    uint16_t readUInt16(const uint16_t defVal = 0);
+    uint32_t readUInt32(const uint32_t defVal = 0);
+    bool readBool(const bool defVal = false);
+    float readFloat(const float defVal = 0.00);
+};
+class ShadeConfigFile : public ConfigFile {
+  protected:
+    bool writeShadeRecord(SomfyShade *shade);
+  public:
+    static bool getAppVersion(appver_t &ver);
+    static bool exists();
+    static bool load(SomfyShadeController *somfy, const char *filename = "/shades.cfg");
+    bool begin(const char *filename, bool readOnly = false);
+    bool begin(bool readOnly = false);
+    bool save(SomfyShadeController *sofmy);
+    bool loadFile(SomfyShadeController *somfy, const char *filename = "/shades.cfg");
+    void end();
+    bool seekRecordById(uint8_t id);
+    bool validate();
+};
+#endif;