docs: add Alomon31 as a contributor and initiate contributors system (#648)

* docs: update README.md [skip ci]

* docs: create .all-contributorsrc [skip ci]

* Update .all-contributorsrc

* Update CONTRIBUTORS.md

Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>
Co-authored-by: Florian <1technophile@users.noreply.github.com>

.all-contributorsrc

@@ -0,0 +1,24 @@
+{
+  "files": [
+    "CONTRIBUTORS.md"
+  ],
+  "imageSize": 100,
+  "commit": false,
+  "contributors": [
+    {
+      "login": "Alomon31",
+      "name": "Alomon31",
+      "avatar_url": "https://avatars0.githubusercontent.com/u/59569925?v=4",
+      "profile": "https://github.com/Alomon31",
+      "contributions": [
+        "code"
+      ]
+    }
+  ],
+  "contributorsPerLine": 7,
+  "projectName": "OpenMQTTGateway",
+  "projectOwner": "1technophile",
+  "repoType": "github",
+  "repoHost": "https://github.com",
+  "skipCi": true
+}