To release this extension on the vscode marketplace, you have to follow instructions from visualstudio docs.
This organisation homepage is at https://dev.azure.com/mozart2
Create a PAT (personal access token) as per the above doc. You can then use the PAT to publish the extension.
An example session:
~$ ./node_modules/vsce/out/vsce login mozart-oz
Personal Access Token for publisher 'mozart-oz': ****************************************************
The Personal Access Token verification succeeded for the publisher 'mozart-oz'.
~$ ./node_modules/vsce/out/vsce ls-publishers
mozart-oz
~$ ./node_modules/vsce/out/vsce publish
Executing prepublish script 'npm run vscode:prepublish'...
> vscode-oz@1.1.0 vscode:prepublish /home/gmaudoux/projets/vscode-oz
> npm run compile
> vscode-oz@1.1.0 compile /home/gmaudoux/projets/vscode-oz
> tsc -p ./
INFO Publishing 'mozart-oz.vscode-oz v1.1.0'...
INFO Extension URL (might take a few minutes): https://marketplace.visualstudio.com/items?itemName=mozart-oz.vscode-oz
INFO Hub URL: https://marketplace.visualstudio.com/manage/publishers/mozart-oz/extensions/vscode-oz/hub
DONE Published mozart-oz.vscode-oz v1.1.0.
It may also be interesting to note that npm has an auto-increment feature that
helps bumping version numbers. See npm version [patch|minor|major].
The extension can also be published with npm publish. This is useless but has
been done several times in the past and remains accessible on the npm registry.