Ignore compile_commands.json (generated by meson, copied out by spry dev)

.gitignore

@@ -4,3 +4,6 @@ web-config.json
 *.image.tar.xz
 .usm-deploy/
 .kilo/
+
+# Generated by meson; copied from builddir by spry for the Vala language server
+compile_commands.json

.usmignore

@@ -14,3 +14,6 @@ web-config.json
 # Deploy artifacts and USM deploy working state
 *.image.tar.xz
 .usm-deploy/
+
+# Generated build artifact (Vala language server)
+compile_commands.json