implement app updates for the app index

[Septias]

• submitted apps should have an app_id and version fields in the manifest.toml file
• the bot will detect if the imported app is an upgrade of an already existing app on the index
• when the xdcstore frontend request the bot to send the updated index metadata, it also sends the app_id and version of downloaded apps
• when the bot receives an update request from the xdcstore frontend, besides the app index metadata it also checks the app_ids and versions of downladed apps and if there is a newer version, sends them one by one in new status-updates to the xdcstore frontend.
• use integer for app_id

hence update of downloaded apps happen automatically when the user use the app and a "update index" request is sent, because of this, a way to remove downloaded apps from cache/local-storage is needed, so user have a way to stop the updates of an app downloaded once to try but never wanted/used anymore, for that aspect see issue #123

[adbenitez]

from the point of view of the bot I would say the issue should be rather:
a) add app_id and version to the appstore.xdc file itself
and/or:
b) check app_id and version is defined in the submitted apps

"add versioning for webxdcs" is not clear to me 🤔 , I created an issue to discuss the specs part for all webxdcs at: webxdc/webxdc_docs#58

that is not blocking the bot from having a temporal implementation via the a) and b) points

[adbenitez]

UPDATE: for a), #66 already exists

[link2xt]

What is the "keep files importing problem"?

[Septias]

Your Idea was to remove it in some pr. If we have proper versioning we can get rid of all this moving to different folder etc, just have on folder with all the webxdcs in it and when run, the bot will just compare all versions and update if needed.

[link2xt]

It was not clear to me that is a reference to the keep_files argument of the import subcommand added in #53.

[adbenitez]

What is the "keep files importing problem"?

currently if you run the cli to import the same folder with apps, they will be imported as duplicates, also if you try to import an updated version of an already existing app