Implement reading and writing of config files

tools/yabridgectl/Cargo.lock

@@ -290,6 +290,17 @@ version = "1.0.114"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5317f7588f0a5078ee60ef675ef96735a1442132dc645eb1d12c018620ed8cd3"
 
+[[package]]
+name = "serde_derive"
+version = "1.0.114"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2a0be94b04690fbaed37cddffc5c134bf537c8e3329d53e982fe04c374978f8e"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "strsim"
 version = "0.10.0"
@@ -430,6 +441,8 @@ dependencies = [
  "aho-corasick",
  "clap",
  "rayon",
+ "serde",
+ "serde_derive",
  "toml",
  "walkdir",
  "xdg",