build: Provide wrap files for the local build

Provide subprojects folder and all the necessary wrap files for the
local build.

Tested:
"meson setup build && cd build && meson compile" executed without
errors.

Change-Id: Ie31d7f48174a1eff255c232b457f14843e7dc0da
Signed-off-by: Konstantin Aladyshev <aladyshev22@gmail.com>
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..6da54be
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+build*/
+subprojects/*
+!subprojects/*.wrap