add fos/sdg in advanced search, add autocomplete methods, add initial json files

explore/src/assets/vocabulary/fos.json

@@ -0,0 +1,86 @@
+{
+  "fos":[
+    {
+      "number": "01",
+      "id": "01 natural sciences",
+      "label": "01 natural sciences",
+      "level": 1,
+      "children": [
+        {
+          "number": "0101",
+          "id": "0101 mathematics",
+          "label": "0101 mathematics",
+          "level": 2,
+          "children": [
+            {
+              "number": "010101",
+              "id": "010101 applied mathematics",
+              "label": "010101 applied mathematics",
+              "level": 3,
+              "children": [
+              ]
+            },
+            {
+              "number": "010102",
+              "id": "010102 general mathematics",
+              "label": "010102 general mathematics",
+              "level": 3,
+              "children": [
+              ]
+            },
+            {
+              "number": "010103",
+              "id": "010103 numerical & computational mathematics",
+              "label": "010103 numerical & computational mathematics",
+              "level": 3,
+              "children": [
+              ]
+            },
+            {
+              "number": "010104",
+              "id": "010104 statistics & probability",
+              "label": "010104 statistics & probability",
+              "level": 3,
+              "children": [
+              ]
+            }
+          ]
+
+        },
+        {
+          "number": "0102",
+          "id": "0102 computer and information sciencess",
+          "label": "0102 computer and information sciences",
+          "level": 2,
+          "children": [
+
+          ]
+
+        }
+
+      ]
+
+    },
+
+    {
+      "number": "02",
+      "id": "02 engineering and technology",
+      "label": "02 engineering and technology",
+      "level": 1,
+      "children": [
+
+      ]
+    },
+    {
+      "number": "03",
+      "id": "03 medical and health sciences",
+      "label": "03 medical and health sciences",
+      "level": 1,
+      "children": [
+
+      ]
+    }
+  ]
+
+}
+

explore/src/assets/vocabulary/sdg.json

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+{
+  "sdg":[
+    {
+      "number": "1",
+      "id": "1. No poverty",
+      "label": "1. No poverty"
+    },
+    {
+      "number": "2",
+      "id": "2. Zero hunger",
+      "label": "2. Zero hunger"
+    }
+
+  ]
+
+}