[hotfix][infra] Add .metals and .bloop into .gitignore (#27480)

Signed-off-by: davidradl <david_radley@uk.ibm.com>

Author: davidradl

.gitignore

@@ -7,6 +7,8 @@ scalastyle-output.xml
 !.idea/vcs.xml
 !.idea/icon.png
 .vscode
+.metals
+.bloop
 .cursor
 .metadata
 .settings