Customization of the request parameter in the pools filter

[vitshev]

Right now, the request is fixed. We need to be able to configure the URL of the request.
We have default param instead of physical param.

{
    "code": 500,
    "message": "Error resolving path //sys/scheduler/orchid/scheduler/pool_trees/physical/pools",
    "attributes": {
        "host": "eu-north1-c-2ct3-3a.yt.infra.nemax.nebiuscloud.net",
        "pid": 1,
        "tid": 4104349831041862700,
        "thread": "Control",
        "fid": 18445341060074820000,
        "datetime": "2024-03-25T20:33:24.940325Z",
        "trace_id": "84c49998-68436609-c90b590-a0ab6042",
        "span_id": 18271773958802686000,
        "method": "Get",
        "path": "//sys/scheduler/orchid/scheduler/pool_trees/physical/pools"
    },
    "inner_errors": [
        {
            "code": 1,
            "message": "Node has no child with key \"physical\"",
            "attributes": {
                "host": "eu-north1-c-2ct3-3a.yt.infra.nemax.nebiuscloud.net",
                "pid": 1,
                "tid": 4104349831041862700,
                "thread": "Control",
                "fid": 18445341060074820000,
                "datetime": "2024-03-25T20:33:24.940280Z",
                "trace_id": "84c49998-68436609-c90b590-a0ab6042",
                "span_id": 18271773958802686000
            }
        }
    ],
    "yt_javascript_wrapper": {
        "xYTRequestId": "9084aba0-3569a252-9c09da92-b364f9ee",
        "xYTTraceId": "84c49998-68436609-c90b590-a0ab6042"
    }

[rBunin]

@ma-efremoff add some info