Add infection config

.gitignore

@@ -1,4 +1,4 @@
-infection*
+infection/
 coverage
 *.mp4
 .vscode

composer.json

@@ -1,6 +1,6 @@
 {
     "name": "danog/tgbot-dialog-id",
-    "description": "A library to work with Telegram bot API dialog IDs",
+    "description": "A library to work with Telegram bot API dialog IDs.",
     "type": "library",
     "autoload": {
         "psr-4": {

infection.json5

@@ -0,0 +1,19 @@
+{
+    "$schema": "vendor/infection/infection/resources/schema.json",
+    "source": {
+        "directories": [
+            "src"
+        ]
+    },
+    "timeout": 10,
+    "logs": {
+        "text": "infection/infection.log",
+        "html": "infection/infection.html",
+        "summary": "infection/summary.log",
+        "perMutator": "infection/per-mutator.md"
+    },
+    "tmpDir": ".infection-cache",
+    "mutators": {
+        "@default": true
+    }
+}