[FEATURE] Exclude ddev generated files from repo

Only commit project specific files to the repo and no ddev generated
files

Related: #691
Signed-off-by: Marcus Schwemer <marcus.schwemer@in2code.de>

Author: mschwemer

.gitignore

@@ -20,3 +20,9 @@ dynamicReturnTypeMeta.json
 docker-compose.yml
 .php_cs.cache
 config/
+
+.ddev/**
+!.ddev/commands/typo3
+!.ddev/commands/typo3cms
+!.ddev/typo3/AdditionalConfiguration.php
+!.ddev/typo3/config.yaml