docs: update docs for user sessions plugin

Merge pull request #744 from devforth/feature/AdminForth/2046/-langua…

…ge-dropdown-on-the-logi

fix: login dropdown AdminForth/2046/-language-dropdown-on-the-logi

fix: enhance deprecation warning to include caller information

fix: zoom without border AdminForth/1955/implement-ability-for-agent-pl

- the zoomed copy of ZoomableImage drops the border and the rounding of the thumbnail, which grew with the scale
- system.html: the Opened tile without the radius
- agent docs: view_image loads whole messages, one call per answer, the maxViewedPerTurn option

feat: add asSystem method to replace deprecated update/create/dereleR…

…espurceRecord

trigger woodpecker workflow

Merge pull request #740 from devforth/feature/security-centralize

Feature/security centralize

Merge branch 'main' of github.com:devforth/adminforth

Merge pull request #739 from devforth/feature/AdminForth/2032/fix-upl…

…oad-plugin-and-storage-

Feature/admin forth/2032/fix upload plugin and storage

feat: add agent icons in adminforth core so they can be reusable