Add CMFRT coding standards documentation and examples

- Introduced guidelines for "one codeunit one global function" architecture to enforce single responsibility in AL code.
- Added best practices and anti-patterns for adding parameters via overloads to maintain backward compatibility.
- Documented the importance of never deleting members in AL and always marking them as obsolete.
- Established the requirement for OnBefore and OnAfter integration events for global procedures to enhance extensibility.
- Defined naming conventions for CMFRT objects, including prefixes and object ID ranges to avoid conflicts.
- Implemented patterns for case statements to ensure all cases are handled, including the necessity of an else clause.
- Introduced the interface injection pattern to allow pluggable operations in table-level code.
- Recommended using Confirm Management for user confirmations to improve testability.
- Established a three-permission set pattern for security to ensure proper access control.
- Created a review skill for CMFRT AL standards to automate compliance checks against established guidelines.

custom/knowledge/patterns/cmfrt-interface-injection.good.al

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+// Step 1: Interface with a single procedure.
+interface "CMFRT MS ICalcTotals"
+{
+    procedure CMFRTMSCalcTotals(var MeasureState: Record "CMFRT MS Measure State");
+}
+
+// Step 2 & 3: Base-table entry point and interface-accepting overload.
+table 2045090 "CMFRT MS Measure State"
+{
+    procedure CalcTotals()
+    var
+        DefaultImpl: Codeunit "CMFRT MS CalcTotals Impl";
+        Handled: Boolean;
+    begin
+        OnBeforeDefaultImplCalcTotals(Rec, Handled);
+        if Handled then
+            exit;
+        CalcTotals(DefaultImpl);
+    end;
+
+    procedure CalcTotals(CalcImpl: Interface "CMFRT MS ICalcTotals")
+    begin
+        CalcImpl.CMFRTMSCalcTotals(Rec);
+    end;
+
+    // Step 4: OnBefore event with Handled pattern.
+    [IntegrationEvent(false, false)]
+    local procedure OnBeforeDefaultImplCalcTotals(var Ms: Record "CMFRT MS Measure State"; var Handled: Boolean)
+    begin
+    end;
+}