Odoo Server saas~15.3 - en to fa translation catalogue (3 entries)

note: module: website_crm_livechat
en: Discussion Channel
fa: کانال گفتگو

note: module: website_crm_livechat
en: Lead/Opportunity
fa: سرنخ / فرصت

note: module: website_crm_livechat
en: Sessions
fa: جلسات
