Add methods to iter over f-string elements (#10309) #10

Job	Run time
cargo fmt	13s
mkdocs	2m 31s
pre-commit	36s
Determine changes	6s
python package	1m 39s
cargo fuzz	5m 10s
cargo test (linux)	5m 12s
cargo test (wasm)	1m 36s
cargo test (windows)	7m 28s
benchmarks	6m 16s
cargo clippy	2m 30s
cargo udeps	2m 3s
formatter instabilities and black similarity	4m 4s
test scripts	1m 11s
ecosystem	20s
test ruff-lsp	24s
	41m 19s

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