docs: rename to AddImage for consistency

Examples/AddImage/AddImage.ps1

@@ -0,0 +1,34 @@
+Add-Type -AssemblyName System.Drawing
+
+. $PSScriptRoot\Add-ExcelImage.ps1
+
+$data = ConvertFrom-Csv @"
+Region,State,Units,Price
+West,Texas,927,923.71
+North,Tennessee,466,770.67
+East,Florida,520,458.68
+East,Maine,828,661.24
+West,Virginia,465,053.58
+North,Missouri,436,235.67
+South,Kansas,214,992.47
+North,North Dakota,789,640.72
+South,Delaware,712,508.55
+"@
+
+$path = "$PSScriptRoot/Add-Picture-test.xlsx"
+Remove-Item $path -ErrorAction SilentlyContinue
+
+
+try {
+    $octocat = "$PSScriptRoot/Octocat.jpg"
+    $image = [System.Drawing.Image]::FromFile($octocat)
+    $xlpkg = $data | Export-Excel -Path $path -PassThru
+    $xlpkg.Sheet1 | Add-ExcelImage -Image $image -Row 4 -Column 6 -ResizeCell
+} finally {
+    if ($image) {
+        $image.Dispose()
+    }
+    if ($xlpkg) {
+        Close-ExcelPackage -ExcelPackage $xlpkg -Show
+    }
+}