Added functionality to set font size and font type in both frontend and backend. (#1783)

* Added variables

* Added functionality to add font size and font type in both frontend and backend

* new changes suggested has been added

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Co-authored-by: Anthony Stirling <77850077+Frooodle@users.noreply.github.com>

src/main/java/stirling/software/SPDF/model/api/misc/AddPageNumbersRequest.java

@@ -15,6 +15,9 @@ public class AddPageNumbersRequest extends PDFWithPageNums {
             allowableValues = {"small", "medium", "large"})
     private String customMargin;
 
+    private float fontSize;
+    private String fontType;
+
     @Schema(description = "Position: 1 of 9 positions", minimum = "1", maximum = "9")
     private int position;