[TASK] Add .ddev/.gitignore for DDEV-generated files

Move DDEV-specific ignore rules from root .gitignore into .ddev/.gitignore,
following DDEV's own convention for excluding generated files.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: PKuhlmay

.ddev/.gitignore

@@ -0,0 +1,15 @@
+.dbimageBuild
+.webimageBuild
+.ddev-docker-compose-base.yaml
+.ddev-docker-compose-full.yaml
+.global_commands/
+.homeadditions/
+apache/
+db-build/
+mutagen/
+nginx_full/
+providers/
+web-build/
+xhprof/
+config.local.yaml
+composer.lock

.gitignore

@@ -25,15 +25,7 @@ sass-lint.html
 .devbox/public/typo3temp/
 .devbox/composer.lock
 
-# DDEV (repo root)
-.ddev/.global_commands/
-.ddev/.homeadditions/
-.ddev/apache/
-.ddev/nginx_full/
-.ddev/providers/
-.ddev/xhprof/
-.ddev/config.local.yaml
-.ddev/composer.lock
+# DDEV (repo root) - generated files handled via .ddev/.gitignore
 .claude
 .firecrawl
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