feat(ui): clickable links in text fields (#924)

* feat: links in text fields are clickable

* style: fix linting errors

* style: remove unnecessary comment

* feat: better url pattern

* chore: disable Ruff error

* style: add trailing line

* style: maybe format it? that'd be smart

* ui: chance text_label from RichText to Markdown

---------

Co-authored-by: Travis Abendshien <46939827+CyanVoxel@users.noreply.github.com>

src/tagstudio/qt/widgets/text.py

@@ -3,6 +3,8 @@
 # Created for TagStudio: https://github.com/CyanVoxel/TagStudio
 
 
+import re
+
 from PySide6.QtCore import Qt
 from PySide6.QtWidgets import QHBoxLayout, QLabel
 
@@ -19,9 +21,25 @@ class TextWidget(FieldWidget):
         self.text_label = QLabel()
         self.text_label.setStyleSheet("font-size: 12px")
         self.text_label.setWordWrap(True)
-        self.text_label.setTextInteractionFlags(Qt.TextInteractionFlag.TextSelectableByMouse)
+        self.text_label.setTextFormat(Qt.TextFormat.MarkdownText)
+        self.text_label.setOpenExternalLinks(True)
+        self.text_label.setTextInteractionFlags(Qt.TextInteractionFlag.TextBrowserInteraction)
         self.base_layout.addWidget(self.text_label)
         self.set_text(text)
 
     def set_text(self, text: str):
+        text = linkify(text)
         self.text_label.setText(text)
+
+
+# Regex from https://stackoverflow.com/a/6041965
+def linkify(text: str):
+    url_pattern = (
+        r"(http|ftp|https):\/\/([\w_-]+(?:(?:\.[\w_-]+)+))([\w.,@?^=%&:\/~+#-*]*[\w@?^=%&\/~+#-*])"
+    )
+    return re.sub(
+        url_pattern,
+        lambda url: f'<a href="{url.group(0)}">{url.group(0)}</a>',
+        text,
+        flags=re.IGNORECASE,
+    )