bind: Replace env_add_path with bins (#3472)

This exposes dig.exe so it is searchable by `scoop search dig`.

`dig` is a common tool used for advanced DNS lookup, it is part of `bind`, unless people know this, they might not know to install `bind`. Current `bind.json` adds bind `bin` path user's ENV, so no shim is necessary, this just make `dig` searchable.

bucket/bind.json

@@ -21,7 +21,38 @@
             "Remove-Item \"$dir\\*\" -Exclude 'bin'"
         ]
     },
-    "env_add_path": "bin",
+    "bin": [
+        "bin\\arpaname.exe",
+        "bin\\ddns-confgen.exe",
+        "bin\\delv.exe",
+        "bin\\dig.exe",
+        "bin\\dnssec-cds.exe",
+        "bin\\dnssec-dsfromkey.exe",
+        "bin\\dnssec-importkey.exe",
+        "bin\\dnssec-keyfromlabel.exe",
+        "bin\\dnssec-keygen.exe",
+        "bin\\dnssec-revoke.exe",
+        "bin\\dnssec-settime.exe",
+        "bin\\dnssec-signzone.exe",
+        "bin\\dnssec-verify.exe",
+        "bin\\host.exe",
+        "bin\\mdig.exe",
+        "bin\\named-checkconf.exe",
+        "bin\\named-checkzone.exe",
+        "bin\\named-compilezone.exe",
+        "bin\\named-journalprint.exe",
+        "bin\\named-rrchecker.exe",
+        "bin\\named.exe",
+        "bin\\nsec3hash.exe",
+        [
+            "bin\\nslookup.exe",
+            "nslookup-bind"
+        ],
+        "bin\\nsupdate.exe",
+        "bin\\rndc-confgen.exe",
+        "bin\\rndc.exe",
+        "bin\\tsig-keygen.exe"
+    ],
     "persist": "etc",
     "checkver": {
         "url": "https://www.isc.org/download/",