feat: add static files simple server

backend/docs/swagger.yaml

@@ -296,6 +296,57 @@ paths:
       summary: Get user session
       tags:
       - auth
+  /upload:
+    post:
+      description: Upload static content to the server
+      produces:
+      - application/json
+      responses:
+        "200":
+          description: OK
+          schema:
+            $ref: '#/definitions/gitea_d3m0k1d_ru_d3m0k1d_d3m0k1d_ru_backend_internal_models.SuccessResponse'
+        "500":
+          description: Internal server error
+          schema:
+            $ref: '#/definitions/gitea_d3m0k1d_ru_d3m0k1d_d3m0k1d_ru_backend_internal_models.ErrorResponse'
+      summary: Upload static content
+      tags:
+      - static
+  /upload/{file}:
+    get:
+      consumes:
+      - application/json
+      description: Get static content
+      parameters:
+      - description: File name
+        in: path
+        name: file
+        required: true
+        type: string
+      produces:
+      - application/json
+      responses:
+        "200":
+          description: Static content
+          schema:
+            allOf:
+            - $ref: '#/definitions/gitea_d3m0k1d_ru_d3m0k1d_d3m0k1d_ru_backend_internal_models.SuccessResponse'
+            - properties:
+                data:
+                  type: string
+              type: object
+        "404":
+          description: File not found
+          schema:
+            $ref: '#/definitions/gitea_d3m0k1d_ru_d3m0k1d_d3m0k1d_ru_backend_internal_models.ErrorResponse'
+        "500":
+          description: Internal server error
+          schema:
+            $ref: '#/definitions/gitea_d3m0k1d_ru_d3m0k1d_d3m0k1d_ru_backend_internal_models.ErrorResponse'
+      summary: Get static content
+      tags:
+      - static
 securityDefinitions:
   Bearer:
     description: Type "Bearer" followed by a space and the JWT token.