Expose full list of extensions
The visibility of existing but unpublished extensions is poor. The data on installed extensions is potentially quite useful, but only the top few dozen are exposed on https://stats.civicrm.org/?tab=sites.
Objective of this issue: Define a way and location to publish a history of the installed extensions over time. First priority would be to expose the current list, including the repo address.
There are likely some quality issues with the info.xml for less used extensions, eg default values not being changed. Some git repo addresses may not be on the public internet, at least in the place suggested in the info.xml file. There may be a need to filter out some extensions, which may become more apparent once the data is examined.