Bug 36098: (QA follow-up) Add POD to Koha::Session

Bug 36098: (QA follow-up) Add POD to Koha::Session

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
(cherry picked from commit 09de3f820b5333e3f23f149f6b8c101d24ba15ed)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
(cherry picked from commit 0ff685f2289ea4e2c7aa1414f8e2e286fd8d6c84)
Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
(cherry picked from commit 96dc7d77c0ce1951a13de465ef837daaeadeebf6)
Signed-off-by: Frédéric Demians <f.demians@tamil.fr>