Add example config file

.editorconfig

@@ -13,3 +13,6 @@ indent_size = 4
 
 [*.{diff,md}]
 trim_trailing_whitespace = false
+
+[*.json]
+indent_size = 2

config.example.json

@@ -0,0 +1,8 @@
+{
+  "log_level": "info",
+
+  "list": {
+    "exact": ["19240158324"],
+    "wildcard": ["1924015*", "192*8324", "*40158324"]
+  }
+}

src/config.rs

@@ -0,0 +1 @@
+pub struct Config {}

src/main.rs

@@ -1,3 +1,6 @@
+mod config;
+mod logger;
+
 fn main() {
     println!("Hello, world!");
 }