Bug 39142: Add debug permission

This patch adds the database foundation for the debug permission feature:
- Creates bit 31 in userflags table for 'debug' permission
- Updates mandatory userflags.sql for fresh installations
- Provides atomic update script for existing installations

The debug permission will allow authorized users to access debugging
tools for toggling JavaScript and CSS customizations.

Signed-off-by: Lari Strand <lari.strand@koha-suomi.fi>
Signed-off-by: Martin Renvoize <martin.renvoize@openfifth.co.uk>
Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>

installer/data/mysql/atomicupdate/Bug_39142.pl

@@ -0,0 +1,20 @@
+use Modern::Perl;
+use Koha::Installer::Output qw(say_warning say_success say_info);
+
+return {
+    bug_number  => "39142",
+    description => "Adding a Debug User permission",
+    up          => sub {
+        my ($args) = @_;
+        my ( $dbh, $out ) = @$args{qw(dbh out)};
+
+        $dbh->do(
+            q{
+            INSERT IGNORE INTO userflags (bit, flag, flagdesc, defaulton)
+            VALUES (32, 'debug', 'Show Debug Interface', 0)
+        }
+        );
+
+        say $out "Added new permission 'Debug'";
+    },
+};

installer/data/mysql/mandatory/userflags.sql

@@ -29,4 +29,5 @@ INSERT INTO userflags (bit, flag, flagdesc, defaulton) VALUES
 (29, 'loggedinlibrary', 'Change logged in library', 0),
 (30, 'preservation', 'Preservation module', 0),
 (31, 'sip2', 'SIP2 module', 0)
+(32, 'debug', 'Show Debug Interface', 0)
 ;