feat: store rdp, vnc and telnet logins in a generic per-protocol table

packages/plugin-sdk/schema/manifest.schema.json

@@ -279,6 +279,55 @@
         "guest": {
           "type": "boolean"
         },
+        "protocols": {
+          "type": "array",
+          "description": "Connection protocols whose per-host login core stores, encrypts, shares and syncs for the plugin.",
+          "items": {
+            "type": "object",
+            "additionalProperties": false,
+            "required": ["id"],
+            "properties": {
+              "id": {
+                "type": "string",
+                "pattern": "^[a-z][a-z0-9-]{0,31}$",
+                "not": { "enum": ["ssh"] }
+              },
+              "credentialFields": {
+                "type": "array",
+                "items": {
+                  "type": "object",
+                  "additionalProperties": false,
+                  "required": ["key"],
+                  "properties": {
+                    "key": {
+                      "type": "string",
+                      "pattern": "^[a-zA-Z][a-zA-Z0-9]{0,31}$",
+                      "not": {
+                        "enum": [
+                          "username",
+                          "password",
+                          "authType",
+                          "credentialId"
+                        ]
+                      }
+                    },
+                    "secret": { "type": "boolean" }
+                  }
+                }
+              },
+              "defaultPort": {
+                "type": "integer",
+                "minimum": 1,
+                "maximum": 65535
+              },
+              "hostLoginFallback": {
+                "type": "array",
+                "uniqueItems": true,
+                "items": { "enum": ["username", "password"] }
+              }
+            }
+          }
+        },
         "keybindingActions": {
           "type": "array",
           "description": "Keybinding actions the plugin adds, with the parameters a saved binding carries.",