feature: added locale_it_IT.inc for Italian language (#109)

* feature: added locale_it_IT.inc for Italian language

* italia locale: added accent marks to weekdays. other small inconsistencies between locales

* update locale list order

---------

Co-authored-by: Luke Marzen <98473324+lmarzen@users.noreply.github.com>

platformio/include/config.h

@@ -64,6 +64,7 @@
 //   Estonian (Estonia)              et_EE
 //   Finnish (Finland)               fi_FI
 //   French (France)                 fr_FR
+//   Italiano (Italia)               it_IT
 //   Dutch (Belgium)                 nl_BE
 //   Portuguese (Brazil)             pt_BR
 #define LOCALE en_US

platformio/src/locales/locale_en_GB.inc

@@ -99,8 +99,8 @@ const char *TXT_WIFI_NO_CONNECTION = "No Connection";
 
 // UNIT SYMBOLS - TEMPERATURE
 const char *TXT_UNITS_TEMP_KELVIN     = "K";
-const char *TXT_UNITS_TEMP_CELSIUS    = "\xB0""C";
-const char *TXT_UNITS_TEMP_FAHRENHEIT = "\xB0""F";
+const char *TXT_UNITS_TEMP_CELSIUS    = "\260C";
+const char *TXT_UNITS_TEMP_FAHRENHEIT = "\260F";
 // UNIT SYMBOLS - WIND SPEED
 const char *TXT_UNITS_SPEED_METERSPERSECOND   = "m/s";
 const char *TXT_UNITS_SPEED_FEETPERSECOND     = "ft/s";

platformio/src/locales/locale_fr_FR.inc

@@ -107,8 +107,8 @@ const char *TXT_WIFI_NO_CONNECTION = "Pas de Connection";
 
 // UNIT SYMBOLS - TEMPERATURE
 const char *TXT_UNITS_TEMP_KELVIN     = "K";
-const char *TXT_UNITS_TEMP_CELSIUS    = "\260" "C";
-const char *TXT_UNITS_TEMP_FAHRENHEIT = "\260" "F";
+const char *TXT_UNITS_TEMP_CELSIUS    = "\260C";
+const char *TXT_UNITS_TEMP_FAHRENHEIT = "\260F";
 // UNIT SYMBOLS - WIND SPEED
 const char *TXT_UNITS_SPEED_METERSPERSECOND   = "m/s";
 const char *TXT_UNITS_SPEED_FEETPERSECOND     = "ft/s";