Revised DashboardConfig.php fix for PHP 8.3 (and some housekeeping)

[dalers]

1. fixes DashboardConfig.php failing on PHP 8.3.6 due to uninitialized array variable "ScriptArray" (fwiw ok with 8.2.32)
2. prevent incorrect 2nd insert being performed resulting in an SQL duplicate key error (hidden using production debug settings)

Function Call StackFrame File Line Function Class Arguments
0 /home/dale/weberp/includes/ConnectDB_mariadb.php 82 ShowDebugBackTrace N/A
Array
(
    [0] => The SQL that failed was
    [1] => INSERT INTO scripts (script,
                                pagesecurity,
                                description
                            ) VALUES (
                                'mrp_dashboard.php',
                                '1',
                                'MRP Status'
                            )
)

1/home/dale/weberp/DashboardConfig.php 70 DB_query N/A
Array
(
    [0] => INSERT INTO scripts (script,
                                pagesecurity,
                                description
                            ) VALUES (
                                'mrp_dashboard.php',
                                '1',
                                'MRP Status'
                            )
)

3. git ignore Windows/WSL files and fonts created JIT by DOMPDF
4. added Copilot direction file for developing using VS Code on WSL Ubuntu (free plan for GitHub Copilot provides "2,000 completions per month" whatever that means).