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**Is your feature request related to a problem? Please describe.** The functions [LLVMDIBuilderCreateEnumerationType](https://docs.rs/llvm-sys/140.0.2/llvm_sys/debuginfo/fn.LLVMDIBuilderCreateEnumerationType.html) and [LLVMDIBuilderCreateEnumerator](https://docs.rs/llvm-sys/140.0.2/llvm_sys/debuginfo/fn.LLVMDIBuilderCreateEnumerator.html) are not implemented in inkwell. They are needed to create debug information for enumerations and...