extract rtc module, extract tank module, fix backupview refresh, switch to embedded storage for eeprom

rust/Cargo.toml

@@ -14,11 +14,8 @@ debug = true
 overflow-checks = true
 panic = "abort"
 incremental = true
-opt-level = "s"
+opt-level = 2
 
-[profile.dev.build-override]
-opt-level = 1
-incremental = true
 
 [package.metadata.cargo_runner]
 # The string `$TARGET_FILE` will be replaced with the path from cargo.
@@ -86,6 +83,7 @@ esp-ota = { version = "0.2.2", features = ["log"] }
 unit-enum = "1.4.1"
 pca9535 = { version = "2.0.0", features = ["std"] }
 ina219 = { version = "0.2.0", features = ["std"] }
+embedded-storage = "=0.3.1"
 
 
 [patch.crates-io]