Added adaway.root template (#1337)

Adaway only needs the following permissions to work properly:
DAC_OVERRIDE, SYS_PTRACE.

Note: [systemless hosts kernelsu
module](https://github.com/symbuzzer/systemless-hosts-KernelSU-module)
needs to be installed, to add support.

This PR only addresses the minimal permission requirements of Adaway to
let it modify hosts file.

website/docs/public/templates/adaway.root

@@ -0,0 +1,24 @@
+{
+    "id":"adaway.root",
+    "name":"Adaway Root",
+    "author":"JohnRTitor",
+    "description":"Only essential permissions to let Adaway modify hosts file and operate a web server.",
+    "uid":0,
+    "gid":0,
+    "groups":[
+        "ROOT"
+    ],
+    "capabilities":[
+        "CAP_DAC_OVERRIDE",
+        "CAP_NET_BIND_SERVICE",
+        "CAP_SYS_PTRACE"
+    ],
+    "context":"u:r:su:s0",
+    "namespace":"INHERITED",
+    "locales": {
+        "bn": {
+            "name": "অ্যাডঅ্যাওয়ে রুট",
+            "description":"অ্যাডঅ্যাওয়ে সিস্টেমের হোস্ট ফাইল পরিবর্তন এবং ওয়েবসার্ভার চালু করতে কমপক্ষে যা অনুমতি লাগে।"
+        }
+    }
+}