Integrate mcutie library for MQTT functionality

- Added `mcutie` as a dependency in `Cargo.toml` and updated `Cargo.lock`.
- Replaced commented-out MQTT logic with fully implemented functionality in `esp.rs`.
- Enhanced MQTT publish and subscription handling with configurable topics and error handling.
- Updated MQTT connection logic to improve reliability and logging.

Software/MainBoard/rust/Cargo.lock

@@ -1426,6 +1426,12 @@ version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
 
+[[package]]
+name = "hex"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
+
 [[package]]
 name = "httparse"
 version = "1.10.1"
@@ -1625,6 +1631,24 @@ dependencies = [
  "regex-automata",
 ]
 
+[[package]]
+name = "mcutie"
+version = "3.0.0"
+dependencies = [
+ "embassy-futures",
+ "embassy-net 0.8.0",
+ "embassy-sync 0.8.0",
+ "embassy-time",
+ "embedded-io 0.7.1",
+ "embedded-io-async 0.7.0",
+ "heapless 0.7.17",
+ "hex",
+ "log",
+ "mqttrs",
+ "once_cell",
+ "pin-project",
+]
+
 [[package]]
 name = "measurements"
 version = "0.11.1"
@@ -1640,6 +1664,15 @@ version = "2.7.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f52b00d39961fc5b2736ea853c9cc86238e165017a493d1d5c8eac6bdc4cc273"
 
+[[package]]
+name = "mqttrs"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "62fc2b40eee1386c55479d534ec95a668e0562d54c6d1dc83bb1962469fec8a7"
+dependencies = [
+ "heapless 0.7.17",
+]
+
 [[package]]
 name = "nb"
 version = "0.1.3"
@@ -1734,6 +1767,10 @@ name = "once_cell"
 version = "1.21.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "42f5e15c9953c5e4ccceeb2e7382a716482c34515315f7b03532b8b4e8393d2d"
+dependencies = [
+ "critical-section",
+ "portable-atomic",
+]
 
 [[package]]
 name = "onewire"
@@ -1810,6 +1847,26 @@ dependencies = [
  "siphasher",
 ]
 
+[[package]]
+name = "pin-project"
+version = "1.1.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f1749c7ed4bcaf4c3d0a3efc28538844fb29bcdd7d2b67b2be7e20ba861ff517"
+dependencies = [
+ "pin-project-internal",
+]
+
+[[package]]
+name = "pin-project-internal"
+version = "1.1.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9b20ed30f105399776b9c883e68e536ef602a16ae6f596d2c473591d6ad64c6"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.110",
+]
+
 [[package]]
 name = "pin-project-lite"
 version = "0.2.16"
@@ -1862,6 +1919,7 @@ dependencies = [
  "ina219",
  "lib-bms-protocol",
  "log",
+ "mcutie",
  "measurements",
  "nb 1.1.0",
  "onewire",