docs: Updates to Comprehension documentation for `Expr`, `iter_var`, `iter_range`, `loop_condition`, and `loop_step` to reflect usage of `iter_var2`
PiperOrigin-RevId: 656007836
fix: Move conformance_service.proto to its own directory to mirror existing go package structure.
feat: Publish an `expr_version` field to track transformations applied during static analysis to the `expr` field within the `CheckedExpr`.
Committer: @TristonianJones
PiperOrigin-RevId: 404145648
data representations used within various open source libraries.
There is no CEL Google API per se, and as such any reference to
one has been removed from the proto libraries including the GAPIC
client code generation.
There is a gRPC service defined among the protos which is used for
driving conformance testing in a cross-language compatible manner.
PiperOrigin-RevId: 307642893
