Build/Test Tools: Instruct git and svn to ignore SQLite files

This prevents users of the SQLite Database Integration plugin from seeing untracked files in the `src/wp-content/database` directory.

Props sukhendu2002, johnbillion

Fixes #62813


git-svn-id: https://develop.svn.wordpress.org/trunk@59666 602fd350-edb4-49c9-b593-d223f7449a82

.gitignore

@@ -46,6 +46,7 @@ wp-tests-config.php
 
 # Files and folders that get created in wp-content
 /src/wp-content/blogs.dir
+/src/wp-content/database
 /src/wp-content/fonts
 /src/wp-content/languages
 /src/wp-content/mu-plugins