Adds accessibility to Markdown Headers. Users that have Talkback enabled on there android device will be able to Navigate by headings.

Author: SLahay

richtext-commonmark/src/commonMain/kotlin/com/halilibo/richtext/markdown/Markdown.kt

@@ -5,7 +5,10 @@ import androidx.compose.runtime.CompositionLocalProvider
 import androidx.compose.runtime.compositionLocalOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberUpdatedState
+import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalUriHandler
+import androidx.compose.ui.semantics.heading
+import androidx.compose.ui.semantics.semantics
 import com.halilibo.richtext.markdown.node.AstBlockQuote
 import com.halilibo.richtext.markdown.node.AstBulletList
 import com.halilibo.richtext.markdown.node.AstDocument
@@ -133,7 +136,7 @@ internal fun RichTextScope.RecursiveRenderMarkdownAst(astNode: AstNode?) {
     }
     is AstHeading -> {
       Heading(level = astNodeType.level) {
-        MarkdownRichText(astNode)
+        MarkdownRichText(astNode, Modifier.semantics { heading() } )
       }
     }
     is AstIndentedCodeBlock -> {

richtext-commonmark/src/commonMain/kotlin/com/halilibo/richtext/markdown/MarkdownRichText.kt

@@ -56,14 +56,14 @@ import com.halilibo.richtext.ui.string.withFormat
  * @param astNode Root node to accept as Text Content container.
  */
 @Composable
-internal fun RichTextScope.MarkdownRichText(astNode: AstNode) {
+internal fun RichTextScope.MarkdownRichText(astNode: AstNode, modifier: Modifier = Modifier) {
   val onLinkClicked = LocalOnLinkClicked.current
   // Assume that only RichText nodes reside below this level.
   val richText = remember(astNode, onLinkClicked) {
     computeRichTextString(astNode, onLinkClicked)
   }
 
-  Text(text = richText)
+  Text(text = richText, modifier = modifier)
 }
 
 private fun computeRichTextString(