Rust

Implement `RustCodeGenerator::add_local_attr` (#86) #420

Job	Run time
Check	18s
Check license and vulnerabilities	15s
Test Coverage	2s
Clippy	17s
ETSI	34s
Rustfmt	10s
Test Suite (all)	38s
Test build binary	18s
Test Suite (default)	38s
Test Suite (protobuf)	40s
	3m 50s

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