gitignore: add Vim Swap files

Totktonada · Totktonada · commit fbbee146d5ec · 2022-02-11T01:24:45.000+03:00
Make working on the project more engaging for ones who (like me) using
Vim.
diff --git a/.gitignore b/.gitignore
@@ -1,2 +1,5 @@
 /node_modules
 /lib
+
+# Vim Swap files.
+.*.sw[a-z]
