feat: Update elapsed and moving time types to float (#178)

These values, representing time, can contain fractions of seconds and are better represented as floating-point numbers. This change updates both the OpenAPI specification and the generated Go model for improved precision.

Author: obalunenko

docs/swagger.json

@@ -2906,7 +2906,8 @@
         },
         "elapsed_time": {
           "description": "The total elapsed time of the considered activities.",
-          "type": "integer"
+          "type": "number",
+          "format": "float"
         },
         "elevation_gain": {
           "description": "The total elevation gain of the considered activities.",
@@ -2915,7 +2916,8 @@
         },
         "moving_time": {
           "description": "The total moving time of the considered activities.",
-          "type": "integer"
+          "type": "number",
+          "format": "float"
         }
       }
     },