Add /token endpoint

openapi.yml

@@ -33,6 +33,24 @@ paths:
             application/json:
               schema:
                 $ref: "#/components/schemas/HelloResponse"
+  /token:
+    post:
+      tags:
+        - session
+      summary: Create a bearer token
+      operationId: createToken
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: "#/components/schemas/CreateSessionRequest"
+      responses:
+        200:
+          description: "New token was generated"
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/CreateSessionResponse"
 
 components:
   schemas:
@@ -42,6 +60,25 @@ components:
         value:
           type: string
 
+    CreateSessionRequest:
+      type: object
+      required:
+        - username
+        - password
+      properties:
+        username:
+          type: string
+        password:
+          type: string
+
+    CreateSessionResponse:
+      type: object
+      required:
+        - token
+      properties:
+        token:
+          type: string
+
     ErrorResponse:
       type: object
       required: