fix(mailgun): Normalize package scope and modernize Mailgun client: rename package to @apiclient.xyz/mailgun, update dependencies, refactor HTTP handling, fix types, update TS config and CI, refresh docs and tests

npmextra.json

@@ -2,17 +2,17 @@
   "gitzone": {
     "projectType": "npm",
     "module": {
-      "githost": "gitlab.com",
-      "gitscope": "mojoio",
+      "githost": "code.foss.global",
+      "gitscope": "apiclient.xyz",
       "gitrepo": "mailgun",
       "description": "an api abstraction package for mailgun",
-      "npmPackagename": "@mojoio/mailgun",
+      "npmPackagename": "@apiclient.xyz/mailgun",
       "license": "MIT",
-      "projectDomain": "mojo.io"
+      "projectDomain": "apiclient.xyz"
     }
   },
   "npmci": {
     "npmGlobalTools": [],
     "npmAccessLevel": "public"
   }
-}
+}