Add pm bubbles

Add pm bubbles

diff --git a/.gitmodules b/.gitmodules
index 1c5a587..eb2ed05 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -656,3 +656,6 @@
 	path = themes/discourse-color-scheme-toggle
 	url = https://github.com/discourse/discourse-color-scheme-toggle
 	branch = main
+[submodule "themes/discourse-pm-bubbles"]
+	path = themes/discourse-pm-bubbles
+	url = https://github.com/discourse/discourse-pm-bubbles
diff --git a/themes/discourse-pm-bubbles b/themes/discourse-pm-bubbles
new file mode 160000
index 0000000..67de496
--- /dev/null
+++ b/themes/discourse-pm-bubbles
@@ -0,0 +1 @@
+Subproject commit 67de496507431fe7dd0f3c017e3dc764b2e4692c

GitHub sha: 44c62c72b09bb865efbeb8312d215c53bcf85780