[IMP] hr, hr_attendance: badge creation and few usability improvement

hr:
-rename btn 'generate badge ID' to 'generate'
-When the badge ID is set, replace the button Generate by "Print Badge"

hr_attendance:
-Rename menu 'Manage Attendances' to "Manager"
-Add a column "Work Hours" to attendee tree view
-Add a <br> after "Welcome to"
-add class text-muted on "or"
-remove class "text-muted" on "scan your badge
-Rename the primary btn into "Identify Manually"

Task-2040884
Closes: #35473

Signed-off-by: Romain Libert (rli) <rli@odoo.com>