Feat optimistic oracle indexer script (#62) #246

Job	Run time
Run linters / markdown-lint	30s
Run linters / toml-lint	20s
Run linters / prettier	1m 9s
Build Rust project / rust_build	54s
Run coverage / coverage	6m 58s
Run Cargo linters / cargo-lint	39s
	10m 30s

Provide feedback