build: gitignore Tycho consumer POMs

These .tycho-consumer-pom.xml files are generated during mvn builds
and should not be tracked.

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

Author: joaodinissf

.gitignore

@@ -7,3 +7,4 @@
 *.xtendbin
 /*/xtend-gen/*
 !/*/xtend-gen/.gitignore
+.tycho-consumer-pom.xml