Bug 16203: Convert item plugins to new style (see bug 10480)

Bug 16203: Convert item plugins to new style (see bug 10480)

Converts item plugins to new style (with builder and launcher).
See also bugs 10480 and 13437.

The following plugins have been adjusted:
barcode_manual.pl
barcode.pl
callnumber-KU.pl
callnumber.pl
cn_browser.pl (Added license statement too)
dateaccessioned.pl
macles.pl
stocknumberam123.pl
stocknumberAV.pl
stocknumber.pl

Test plan:
Connect the plugin to an item field.
Verify that the plugin still works.

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Tested if all plugins compile okay.
Ran most of them thru FrameworkPlugin.t.
Tested them in the item editor.

Note: the form for macles.pl comes up, further hard to test.

Signed-off-by: Josef Moravec <josef.moravec@gmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>