Place Photoshop file as linked Smart object within another Photoshop using scripting

Do you mean ESTK Scripting? 

// select files and place as smart objects;
// 2014, use it at your own risk;
if (app.documents.length > 0) {
var myDocument = app.activeDocument;
// select files;
if ($.os.search(/windows/i) != -1) {var theFiles = File.openDialog ("please select files", '*.jpg;*.tif;*.pdf;*.psd;*.bmp', true)} 
else {var theFiles = File.openDialog ("please select files", getFiles, true)};
if (theFiles.length > 0) {
for (var m = 0; m < theFiles.length; m++) {
	var theLayer = placeScaleRotateFile(theFiles[m], 0, 0, 100, 100, 0, true);
	var theFactor = myDocument.width / (theLayer.bounds[2] - theLayer.bounds[0]) * 100;
	theLayer.resize (theFactor, theFactor, AnchorPosition.MIDDLECENTER)
	}
}
};
////// get psds, tifs and jpgs from files //////
function getFiles (theFile) {
    if (theFile.name.match(/\.(eps|ai|jpg|tif|psd|pdf|)$/i)) {
        return true
        };
	};
////// place //////
function placeScaleRotateFile (file, xOffset, yOffset, theXScale, theYScale, theAngle, linked) {
// =======================================================
var idPlc = charIDToTypeID( "Plc " );
    var desc5 = new ActionDescriptor();
    var idnull = charIDToTypeID( "null" );
    desc5.putPath( idnull, new File( file ) );
    var idFTcs = charIDToTypeID( "FTcs" );
    var idQCSt = charIDToTypeID( "QCSt" );
    var idQcsa = charIDToTypeID( "Qcsa" );
    desc5.putEnumerated( idFTcs, idQCSt, idQcsa );
    var idOfst = charIDToTypeID( "Ofst" );
        var desc6 = new ActionDescriptor();
        var idHrzn = charIDToTypeID( "Hrzn" );
        var idPxl = charIDToTypeID( "#Pxl" );
        desc6.putUnitDouble( idHrzn, idPxl, xOffset );
        var idVrtc = charIDToTypeID( "Vrtc" );
        var idPxl = charIDToTypeID( "#Pxl" );
        desc6.putUnitDouble( idVrtc, idPxl, yOffset );
    var idOfst = charIDToTypeID( "Ofst" );
    desc5.putObject( idOfst, idOfst, desc6 );
    var idWdth = charIDToTypeID( "Wdth" );
    var idPrc = charIDToTypeID( "#Prc" );
    desc5.putUnitDouble( idWdth, idPrc, theYScale );
    var idHght = charIDToTypeID( "Hght" );
    var idPrc = charIDToTypeID( "#Prc" );
    desc5.putUnitDouble( idHght, idPrc, theXScale );
    var idAngl = charIDToTypeID( "Angl" );
    var idAng = charIDToTypeID( "#Ang" );
    desc5.putUnitDouble( idAngl, idAng,theAngle );	
if (linked == true) {
    var idLnkd = charIDToTypeID( "Lnkd" );
    desc5.putBoolean( idLnkd, true );
	};
executeAction( idPlc, desc5, DialogModes.NO );
// =======================================================
return app.activeDocument.activeLayer;
};