Switch to 2.0 branch (#1152)

* Adapt boards to v2 partition tables

* fix esp log error

* fix display style

* reset emotion after download assets

* fix compiling

* update assets default url

* Add user only tools

* Add image cache

* smaller cache and buffer, more heap

* use MAIN_EVENT_CLOCK_TICK to avoid audio glitches

* bump to 2.0.0

* fix compiling errors

---------

Co-authored-by: Xiaoxia <terrence.huang@tenclass.com>

main/assets/locales/en-US/language.json

@@ -17,43 +17,40 @@
         "CHECK_NEW_VERSION_FAILED": "Check for new version failed, will retry in %d seconds: %s",
         "SWITCH_TO_WIFI_NETWORK": "Switching to Wi-Fi...",
         "SWITCH_TO_4G_NETWORK": "Switching to 4G...",
-
         "STANDBY": "Standby",
         "CONNECT_TO": "Connect to ",
         "CONNECTING": "Connecting...",
         "CONNECTION_SUCCESSFUL": "Connection Successful",
         "CONNECTED_TO": "Connected to ",
-
         "LISTENING": "Listening...",
         "SPEAKING": "Speaking...",
-
         "SERVER_NOT_FOUND": "Looking for available service",
         "SERVER_NOT_CONNECTED": "Unable to connect to service, please try again later",
         "SERVER_TIMEOUT": "Waiting for response timeout",
         "SERVER_ERROR": "Sending failed, please check the network",
-
         "CONNECT_TO_HOTSPOT": "Hotspot: ",
         "ACCESS_VIA_BROWSER": " Config URL: ",
         "WIFI_CONFIG_MODE": "Wi-Fi Configuration Mode",
         "ENTERING_WIFI_CONFIG_MODE": "Entering Wi-Fi configuration mode...",
         "SCANNING_WIFI": "Scanning Wi-Fi...",
-
         "NEW_VERSION": "New version ",
         "OTA_UPGRADE": "OTA Upgrade",
         "UPGRADING": "System is upgrading...",
         "UPGRADE_FAILED": "Upgrade failed",
         "ACTIVATION": "Activation",
-
         "BATTERY_LOW": "Low battery",
         "BATTERY_CHARGING": "Charging",
         "BATTERY_FULL": "Battery full",
         "BATTERY_NEED_CHARGE": "Low battery, please charge",
-
         "VOLUME": "Volume ",
         "MUTED": "Muted",
         "MAX_VOLUME": "Max volume",
-
         "RTC_MODE_OFF": "AEC Off",
-        "RTC_MODE_ON": "AEC On"
+        "RTC_MODE_ON": "AEC On",
+        "PLEASE_WAIT": "Please wait...",
+        "FOUND_NEW_ASSETS": "Found new assets: %s",
+        "DOWNLOAD_ASSETS_FAILED": "Failed to download assets",
+        "LOADING_ASSETS": "Loading assets...",
+        "HELLO_MY_FRIEND": "Hello, my friend!"
     }
 }