Rename to l4p, update references and README.md

Signed-off-by: Jacob Kiers <code@kiers.eu>

Cargo.toml

@@ -1,13 +1,13 @@
 [package]
-name = "fourth"
+name = "layer4-proxy"
 version = "0.1.7"
 edition = "2021"
-authors = ["LI Rui <lr_cn@outlook.com>"]
+authors = ["Jacob Kiers <code@kiers.eu>"]
 license = "Apache-2.0"
 description = "Simple and fast layer 4 proxy in Rust"
 readme = "README.md"
-homepage = "https://github.com/KernelErr/fourth"
-repository = "https://github.com/KernelErr/fourth"
+homepage = "https://code.kiers.eu/jjkiers/layer4-proxy"
+repository = "https://code.kiers.eu/jjkiers/layer4-proxy"
 keywords = ["proxy", "network"]
 categories = ["web-programming"]
 
@@ -15,6 +15,10 @@ categories = ["web-programming"]
 
 exclude = [".*"]
 
+[[bin]]
+name = "l4p"
+path = "src/main.rs"
+
 [dependencies]
 async-trait = "0.1.73"
 byte_string = "1"