echart绘制海南地图时增加南海诸岛显示（现成geojson数据）

使用场景：产品经理要求展示海南地图时，需要显示南海诸岛；

问题：南海诸岛在中国地图上的显示，是echart在mapName=‘china’时，默认fix进去。但是海南省不会默认fix进去

解决方案：将南海诸岛的geojson数据想办法弄到，将其直接放在海南省地图数据里面（将三沙市删除）

处理结果：

{
  "type": "FeatureCollection",
  "features": [
    {
      "id": "460100",
      "type": "Feature",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
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        ],
        "encodeOffsets": [
          [
            112750,
            20508
          ]
        ]
      },
      "properties": {
        "cp": [
          110.33119,
          20.031971
        ],
        "name": "海口市",
        "childNum": 1
      }
    },
    {
      "id": "460200",
      "type": "Feature",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          "@@FDFFAF@DZRRD@B@LLTFDFFABJDLALPRDHADBHHLBJABCD@RdD@XMHDJHDBFFLDDLRE@ABCDDBABFRDREBDF@DDLDDADEJAFCFKDCTCVL@BEFBDJBBHFFAHBVCPCDEBAF@JCJBPBFDBDH@HBLBBF@BFJFANBHDFFDFBF@FCHA\\CRHJHF@FGLCD@VODINQLBFAHC@EACBMDIB@JHHDHEJBFFFJBLKVAFBHFJXZBLDFFDLDPDLLJ@NLJDNNNJNZNJHAFB@CHG@OCKFEACF@BC@CBGLU@GDCD@@A@CEIFGF@FDBBBFDABBB@LCFETIDCN@XFJEFALEJBFAL@DDFGBSDAFAZCPGFCBECWBG@A@EBC@OCCDMCEIGGIDIEEAQEC@I@ALI@GCGAIGGKFBMNMPE@ADABKLE@E@IBGFCJAJDFAFBDAFBBAH@@CTIHJNFNMHBDCFAJFF@D@DBBBDBDAFBDBDFDAF@LL@CJKJCHBJCB@DBHAD@@FBDLDFEDALFGN@DHF@HN@@LAF@JPTB@JIFAHI@@BB@HER@RDNBLFJLNFBFAB@@FCHDJCFBH@DP@NHHHDCNFNDDRBD@R@DH@HFHGD@HI@MBAECEQFOFENGV@BCJMHGFO@EAEGIAWCGCA]ECC@EDODEF[MEFGFBB@\\«UEQICCGUEmW{C]CgW¡QO]MeIgC_DUDO@QCeMc[YKWEWAUBMDWP_`IDO@}CUDMDGHM\\KJSH×VUJsRħI_BUBQLELIjMlEHGDSD½DAQCKGEGGCKGBGDGHYl"
        ],
        "encodeOffsets": [
          [
            111547,
            18776
          ]
        ]
      },
      "properties": {
        "cp": [
          109.508268,
          18.247872
        ],
        "name": "三亚市",
        "childNum": 1
      }
    },
    {
      "id": "460400",
      "type": "Feature",
      "geometry": {
        "type": "MultiPolygon",
        "coordinates": [
          [
            "@@EGICEEDIEKDKEGAODIHEAIQMEKSUMGGKEW@EHGHAR@D@DEAQ@KCOBOBEHCBELABE@KGQE@GBGFIAACFMAEEBIAKAIGUHONO@GAQCSKK@KDGAQECEAE@CJGBC@CCCASLMIUBIDAJCFDL@HCHFLADEPB\\A@@CC@CFE@EFBDDF@@IFKDCAACCBABK@SCOIQEMGGCMAGDEDCHSBKDGAuCGGGAKEECEAOGIAGCKKNITEVCDEBMEUCaCCLSNQTAXAF@ZABKDIAAAAEAGE@GGEBCHCRADGHAHABKFEHEBAD@DGHEHAJGDADEPIDCNE@GGMAMIKCGCC@CFFB@DKBeKCACA[HBBFJDLBDTAAH@FHDBPHFFAFBAJHL@DC@CH@JFDH@DF@DCFEDG@@F@FGDELIJAFNLAFEDEHAFC@IIQCKBI@EGQWEMDOEEQKEEKEABMDCDGEC@G@IIGDEAE@KFEDDD@BEFADBF@DIDABEAAAA@CFEFC@@AAAAFE@DE@EEGCB@FA@CCCA@HABCEIBCRINIBIHA@EEA@ADBDAFCDAA@CGAEKCDAFABAC@CEEGD@HCDADCDA@CCBMAGC@A@W@@CFC@AAASB@ABGAAMFEFAHOAILM@AEC@A@AHA@IE@ECCO@ABEJQLGBOEECE@IFGJBH@JHNZRGP]AUBEFITINOFGFCHAJKTEHIACCAKCEEAEHEDGAWBIFCHUJODW@GBG@EEESB]NWBIEQMIWJWMGCM@KBGDEDBF@HAFCBEPAJDB@BABGDCDE`OBUHENGHKDIAEACBEHWvTVXRtX|lXhN\\Xj^b^NXHhDRDNLZ`DN@HMbELCLBd@PP^JJPHlTFHDXDFV\\JFPJL@PCFBPJBNFN@bFLDBF@LALEH@BBAJDHFD\\JN@rKFAVUFAJ@JBN@IQĘyPEDIFe@aAU@KJgDKHEXCJEHUAOAEBYAGGI@EGCKDBIKGIIEAKAKLC@@IAMDIDEDAJBNY@OEEXOJUIMAGHAF@VJJOHADEN@DCJJXBF@DCFID@@FFDBADEFBL@DBNAJB@ASEIMBEAIJACGDCBCAADGBD@JHK@AACF@@CF@@GBAAFDBEHAF@@JCDCBCBB@E@ABAAAB@BFB@DGB@FEBBGFADBBD@@EDABBNABEJKFAJJRJREBCJBIHC@DB@BFGHCDFCBH@BHBAAECCAEK@FGFABCDBHCL@DAJHPB"
          ],
          [
            "@@MEGBID@FDHRJNBP@dEjIHGBCACICGIC@KBCBI@]JCBAFM@GA"
          ]
        ],
        "encodeOffsets": [
          [
            [
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            ]
          ],
          [
            [
              112059,
              20391
            ]
          ]
        ]
      },
      "properties": {
        "cp": [
          109.576782,
          19.51748