[tracker/wip/carlosg/hotdoc: 3/40] meson: Add gi-docgen as a subproject

[Carlos Garnacho <carlosg src gnome org>]

commit 50c0165b108261ed8cba93db408a8ee8ecae5e7b
Author: Daniele Nicolodi <daniele grinta net>
Date:   Wed May 12 23:00:42 2021 +0200

    meson: Add gi-docgen as a subproject
    
    Currently this is the preferred way to integrate it with the built system.

 subprojects/gi-docgen.wrap | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/subprojects/gi-docgen.wrap b/subprojects/gi-docgen.wrap
new file mode 100644
index 000000000..98cd92118
--- /dev/null
+++ b/subprojects/gi-docgen.wrap
@@ -0,0 +1,6 @@
+[wrap-git]
+directory=gi-docgen
+url=https://gitlab.gnome.org/GNOME/gi-docgen.git
+push-url=ssh://git gitlab gnome org:GNOME/gi-docgen.git
+revision=main
+depth=1