Add operationId to all endpoints of all APIs

To facilitate generation of API stubs from the spec.

Signed-off-by: Alexey Rusakov <ktirf@users.sf.net>

api/identity/lookup.yaml

@@ -27,6 +27,7 @@ paths:
     get:
       summary: Look up the Matrix user ID for a 3pid.
       description: Look up the Matrix user ID for a 3pid.
+      operationId: lookupUser
       parameters:
         - in: query
           type: string

api/identity/pubkey.yaml

@@ -28,6 +28,7 @@ paths:
       summary: Get a public key.
       description: |-
         Get the public key for the passed key ID.
+      operationId: getPubKey
       parameters:
         - in: path
           type: string
@@ -56,6 +57,7 @@ paths:
       summary: Check whether a long-term public key is valid.
       description: |-
         Check whether a long-term public key is valid.
+      operationId: isPubKeyValid
       parameters:
         - in: query
           type: string
@@ -83,6 +85,7 @@ paths:
       summary: Check whether a short-term public key is valid.
       description: |-
         Check whether a short-term public key is valid.
+      operationId: isEphemeralPubKeyValid
       parameters:
         - in: query
           type: string