[lldb] [llvm] [lldb][DWARF] Replace lldb's DWARFDebugArangeSet with llvm's (PR #110058)

[Jonas Devlieghere via llvm-commits]

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@@ -73,6 +73,12 @@ class DWARFDebugArangeSet {
     return desc_iterator_range(ArangeDescriptors.begin(),
                                ArangeDescriptors.end());
   }
+
+  size_t getDescriptorsSize() const { return ArangeDescriptors.size(); }
+
+  const Descriptor &getDescriptiorRef(uint32_t I) const {
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JDevlieghere wrote:

Should we add an `assert(I < ArangeDescriptors.size())`? 

https://github.com/llvm/llvm-project/pull/110058