add binary file easytier-web-embed (#718)

* embed web dashboard into easytier-web
* add binary file easytier-web-embed

Cargo.lock

@@ -571,6 +571,20 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "axum-embed"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "077959a7f8cf438676af90b483304528eb7e16eadadb7f44e9ada4f9dceb9e62"
+dependencies = [
+ "axum-core",
+ "chrono",
+ "http",
+ "mime_guess",
+ "rust-embed",
+ "tower-service",
+]
+
 [[package]]
 name = "axum-login"
 version = "0.16.0"
@@ -2028,6 +2042,7 @@ dependencies = [
  "anyhow",
  "async-trait",
  "axum",
+ "axum-embed",
  "axum-login",
  "axum-messages",
  "base64 0.22.1",
@@ -4116,6 +4131,16 @@ version = "0.3.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6877bb514081ee2a7ff5ef9de3281f14a4dd4bceac4c09388074a6b5df8a139a"
 
+[[package]]
+name = "mime_guess"
+version = "2.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f7c44f8e672c00fe5308fa235f821cb4198414e1c77935c1ab6948d3fd78550e"
+dependencies = [
+ "mime",
+ "unicase",
+]
+
 [[package]]
 name = "minimal-lexical"
 version = "0.2.1"