fix(common): make text in comments screen selectable

With this change you can now select
- The post title
- The post description if it exists, and
- Each individual comment

Fixes #385

common/src/main/kotlin/dev/msfjarvis/claw/common/comments/CommentEntry.kt

@@ -19,6 +19,7 @@ import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.selection.SelectionContainer
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.Public
 import androidx.compose.material3.MaterialTheme
@@ -70,7 +71,7 @@ internal fun CommentsHeader(
       modifier = Modifier.padding(16.dp).fillMaxWidth(),
       verticalArrangement = Arrangement.spacedBy(8.dp),
     ) {
-      PostTitle(title = postDetails.title)
+      SelectionContainer { PostTitle(title = postDetails.title) }
       TagRow(tags = postDetails.tags.toImmutableList())
       Spacer(Modifier.height(4.dp))
 
@@ -84,7 +85,9 @@ internal fun CommentsHeader(
       }
 
       if (postDetails.description.isNotBlank()) {
+        SelectionContainer {
           ThemedRichText(htmlConverter.convertHTMLToMarkdown(postDetails.description))
+        }
         Spacer(Modifier.height(4.dp))
       }
       Submitter(
@@ -169,6 +172,7 @@ internal fun CommentEntry(
           Modifier.clickable { uriHandler.openUri("https://lobste.rs/u/${comment.user.username}") },
       )
       if (commentNode.isExpanded) {
+        SelectionContainer {
           ThemedRichText(
             text = htmlConverter.convertHTMLToMarkdown(comment.comment),
             modifier = Modifier.padding(top = 8.dp)
@@ -177,6 +181,7 @@ internal fun CommentEntry(
       }
     }
   }
+}
 
 @Composable
 fun buildCommenterString(