Add discourse-header-search repo

Add discourse-header-search repo

diff --git a/.gitmodules b/.gitmodules
index 3b19688..9f8a702 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -674,3 +674,6 @@
 [submodule "themes/discourse-wcag-contrast"]
 	path = themes/discourse-wcag-contrast
 	url = https://github.com/discourse/discourse-wcag-contrast
+[submodule "themes/discourse-header-search"]
+	path = themes/discourse-header-search
+	url = https://github.com/discourse/discourse-header-search
diff --git a/themes/discourse-header-search b/themes/discourse-header-search
new file mode 160000
index 0000000..6afc999
--- /dev/null
+++ b/themes/discourse-header-search
@@ -0,0 +1 @@
+Subproject commit 6afc999ba98471d184a16227066fe0a891c39f48

GitHub sha: aaa096a49db9a0afd200cc4d18c6a6f75d508a21