Typography: added fonts/styles for headings and various text sizes

flatlaf-theme-editor/src/main/resources/com/formdev/flatlaf/themeeditor/FlatLafUIKeys.txt

@@ -1064,6 +1064,16 @@ Viewport.background
 Viewport.font
 Viewport.foreground
 ViewportUI
+[style].h0
+[style].h00
+[style].h1
+[style].h2
+[style].h3
+[style].h4
+[style].large
+[style].medium
+[style].mini
+[style].small
 activeCaption
 activeCaptionBorder
 activeCaptionText
@@ -1075,6 +1085,12 @@ controlShadow
 controlText
 defaultFont
 desktop
+h0.font
+h00.font
+h1.font
+h2.font
+h3.font
+h4.font
 html.missingImage
 html.pendingImage
 inactiveCaption
@@ -1084,9 +1100,13 @@ info
 infoText
 laf.dark
 laf.scaleFactor
+large.font
+medium.font
 menu
 menuText
+mini.font
 scrollbar
+small.font
 swingx/TaskPaneUI
 text
 textHighlight