Move simplesaml include from /var/ to its location in /vendor

[goetzk]

Hi Seth,
This is a request for future: I suggest moving Shibboleth.php's simplesamlphp include from /var/ to the installed location under vendor.

kgoetz@L23001:~/source/collectiveaccess_providence$ rgrep var/simplesamlph
app/lib/Auth/Adapters/Shibboleth.php:require_once('/var/simplesamlphp/lib/_autoload.php');

Going by some other imports, that would be replaced with something like this:

require_once(__CA_BASE_DIR__.'/vendor/simplesamlphp/simplesamlphp/lib/_autoload.php');

This would enable installing directly from composer (eg composer require simplesamlphp/simplesamlphp ^2.0) and having CA find the location without any other filesystem fiddling.

I'm not sure if I'll get to this in the near term but thought I'd flag it up and will try to submit a change in future.

[goetzk]

I will submit these two PRs related to this issue, once they've been tested a bit more:
https://github.com/medeopolis/providence/tree/dev-php8-composer-graphql-upgrade
https://github.com/medeopolis/providence/tree/dev-php8-simplesaml-path