Modify vsce npm-module's package command to strip the leading '.'

from the file extension string that is populated in
[Content-Types.xml] for the different files in the extension.

Signed-off-by: Siddharth Srinivasan <siddharth.srinivasan@oracle.com>

Author: sid-srini

build.xml

@@ -255,6 +255,14 @@
             <arg value="@vscode/vsce@2.19.0" />
         </exec>
 
+        <exec executable="patch" dir="${build.dir}/vsce/node_modules/@vscode/vsce/out" failifexecutionfails="false" failonerror="false">
+            <arg value="-p1"/>
+            <arg value="-z"/>
+            <arg value=".orig"/>
+            <arg value="-i"/>
+            <arg value="${basedir}/patches/vsce-package-ContentTypes.diff"/>
+        </exec>
+
         <move todir="${basedir}/vscode/node_modules" includeemptydirs="false">
             <fileset dir="${basedir}/vscode/node_modules">
                 <include name="**/LICENSE"/>

patches/vsce-package-ContentTypes.diff

@@ -0,0 +1,14 @@
+diff --git a/package.js.orig b/package.js
+index 5bc5e0c..4aa4b79 100644
+--- a/package.js.orig
++++ b/package.js
+@@ -1088,7 +1088,8 @@ async function toContentTypes(files) {
+     }
+     const contentTypes = [];
+     for (const [extension, contentType] of mimetypes) {
+-        contentTypes.push(`<Default Extension="${extension}" ContentType="${contentType}"/>`);
++        const extn = (extension.startsWith('.') && extension.length > 1) ? extension.substring(1) : extension;
++        contentTypes.push(`<Default Extension="${extn}" ContentType="${contentType}"/>`);
+     }
+     return `<?xml version="1.0" encoding="utf-8"?>
+ <Types xmlns="http://schemas.openxmlformats.org/package/2006/content-types">${contentTypes.join('')}</Types>