fix: use unique ID in manifest.webapp permissions

Permissions for `com.bitwarden.contacts` and `io.cozy.contacts` were
using the same ID

With this configuration `com.bitwarden.contacts` rule was overwritten
by `io.cozy.contacts` that is declared later in the json

This fix is related to this issue: cozy/cozy-stack#3118

manifest.webapp

@@ -69,7 +69,7 @@
       "type": "com.bitwarden.organizations",
       "verbs": ["ALL"]
     },
-    "contacts": {
+    "contacts_bitwarden": {
       "description": "Required to share passwords with other people",
       "type": "com.bitwarden.contacts",
       "verbs": ["ALL"]