Add link share password authentication (#831)

Reviewed-on: https://kolaente.dev/vikunja/api/pulls/831
Co-authored-by: konrad <konrad@kola-entertainments.de>
Co-committed-by: konrad <konrad@kola-entertainments.de>

pkg/swagger/swagger.yaml

@@ -313,6 +313,9 @@ definitions:
       name:
         description: The name of this link share. All actions someone takes while being authenticated with that link will appear with that name.
         type: string
+      password:
+        description: The password of this link share. You can only set it, not retrieve it after the link share has been created.
+        type: string
       right:
         default: 0
         description: The right this list is shared with. 0 = Read only, 1 = Read & Write, 2 = Admin. See the docs for more details.
@@ -323,7 +326,7 @@ definitions:
         description: The user who shared this list
       sharing_type:
         default: 0
-        description: The kind of this link. 0 = undefined, 1 = without password, 2 = with password (currently not implemented).
+        description: The kind of this link. 0 = undefined, 1 = without password, 2 = with password.
         maximum: 2
         type: integer
       updated:
@@ -1064,6 +1067,11 @@ definitions:
         minLength: 1
         type: string
     type: object
+  v1.LinkShareAuth:
+    properties:
+      password:
+        type: string
+    type: object
   v1.UserAvatarProvider:
     properties:
       avatar_provider:
@@ -3850,6 +3858,12 @@ paths:
       - application/json
       description: Get a jwt auth token for a shared list from a share hash.
       parameters:
+      - description: The password for link shares which require one.
+        in: body
+        name: password
+        required: true
+        schema:
+          $ref: '#/definitions/v1.LinkShareAuth'
       - description: The share hash
         in: path
         name: share