feat(gnovm): sync code AssignStmt - ValueDecl #8870

Job	Run time
Run Main (autocounterd) / Go Build / generated	9s
Run Main (autocounterd) / Go Linter / lint	45s
Run Main (docker-integration) / Go Build / generated	7s
Run Main (autocounterd) / Go Test / test	44s
Run Main (genproto) / Go Build / generated	6s
Run Main (docker-integration) / Go Test / test	14s
Run Main (genproto) / Go Linter / lint	41s
Run Main (docker-integration) / Go Linter / lint	12s
Run Main (genproto) / Go Test / test	48s
Run Main (genstd) / Go Build / generated	11s
Run Main (genstd) / Go Linter / lint	25s
Run Main (genstd) / Go Test / test	30s
Run Main (goscan) / Go Build / generated	17s
Run Main (goscan) / Go Linter / lint	17s
Run Main (goscan) / Go Test / test	17s
Run Main (loop) / Go Build / generated	17s
Run Main (loop) / Go Linter / lint	39s
Run Main (loop) / Go Test / test	49s
	7m 28s

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