feat: build default assets instead of downloading and v2 tables for esp-hi, echoear (#1203)

* fix: call flush ready on io ready

* eachear: update to v2 partition table but disable class Assets currently

* stop gif if previewing an image

* feat: build default assets instead of downloading

* version updates

* fix None error

* delay 1s before enter wifi config mode

* fix compiling with v1 partition table

---------

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

main/boards/lichuang-c3-dev/README.md

@@ -7,5 +7,5 @@
 ```
 Partition Table  --->
   Partition Table (Custom partition table CSV)  --->
-  (partitions/v1/8m.csv) Custom partition CSV file
+  (partitions/v2/8m.csv) Custom partition CSV file
 ```