target-ide/ support by resourceBaseDir using ${project.build.directory}

target-ide/ support by resourceBaseDir using ${project.build.directory}

without explicitly setting this,
org.opendaylight.yangtools.maven.sal.api.gen.plugin.CodeGeneratorImpl
defaults to hard-coded target/generated-sources/spi for
META-INF/services/org.opendaylight.yangtools.yang.binding.YangModelBindingProvider
instead of target-ide.

Minor: Also add target-ide/ to .gitignore of this git repository.

Change-Id: I4155eb666dd6ef028dc2397e32c88cd50db4f0c6
Signed-off-by: Michael Vorburger <vorburger@redhat.com>