Rename iced_sentinel to iced_beacon and refactor its API

beacon/Cargo.toml

@@ -0,0 +1,29 @@
+[package]
+name = "iced_beacon"
+description = "A client/server protocol to monitor and supervise iced applications"
+version.workspace = true
+edition.workspace = true
+authors.workspace = true
+license.workspace = true
+repository.workspace = true
+homepage.workspace = true
+categories.workspace = true
+keywords.workspace = true
+
+[dependencies]
+iced_core.workspace = true
+iced_core.features = ["serde"]
+
+bincode.workspace = true
+futures.workspace = true
+log.workspace = true
+thiserror.workspace = true
+
+tokio.workspace = true
+tokio.features = ["rt", "rt-multi-thread", "net", "sync", "time", "io-util", "macros"]
+
+serde.workspace = true
+serde.features = ["derive"]
+
+semver.workspace = true
+semver.features = ["serde"]