observable:BrowserBookmarkFacet to be implemented

[fabrizio-turchi]

The Web Bookmark artifact should be included in the CASE representation. Example

{        
            "@id": "kb:98d0fe58-91ee-49ad-a53a-ae5218d4bf5e",
            "@type": "uco-observable:ObservableObject",
            "uco-core:hasFacet": [
                {        
                    "@id": "kb:dac8b0f0-4370-4caa-8f74-cd28f0f51b2c",
                    "@type": "observable:BrowserBookmarkFacet",
                    "observable:accessedTime": {
                        "@type": "xsd:dateTime",
                        "@value": "2023-09-11:23:44+00:00"
                    },
                    "uco-observable:observableCreatedTime": {
                        "@type": "xsd:dateTime",
                        "@value": "2023-05-20T18:04:37+00:00"
                    }, 
                    "observable:modifiedTime": {
                        "@type": "xsd:dateTime",
                        "@value": "2023-08-20T18:04:37+00:00"
                    }, 
                    "observable:bookmarkPath": "/Mobile Bookmarks",                                              
                    "uco-observable:application": {
                        "@id": "kb:7096b5ea-dedb-45ff-97fe-2652e508acd1"
                    },       
                    "observable:urlTargeted": {
                        "@id": "kb:658ad522-263f-44ae-b6da-afbd30658e50"
                    }
                }
            ]
        },
        {           
            "@id": "kb:7096b5ea-dedb-45ff-97fe-2652e508acd1",
            "@type": "uco-observable:ObservableObject",
            "uco-core:hasFacet": [
                {   
                    "@id": "kb:d58b3fb6-1caa-4e64-99f5-7f788aaa63e2",
                    "@type": "uco-observable:ApplicationFacet",
                    "uco-core:name": "Safari"
                }
            ]
        },
        {           
            "@id": "kb:658ad522-263f-44ae-b6da-afbd30658e50",
            "@type": "uco-observable:ObservableObject",
            "uco-core:hasFacet": [
                {   
                    "@id": "kb:460031a0-a39d-4968-91a7-bfd248b7ad2a",
                    "@type": "uco-observable:URLFacet",
                    "uco-observable:fullValue": "www.macrumors.com"
                }
            ]       
        },