[mlir][Value] Add getNumUses, hasNUses, and hasNUsesOrMore to Value (#142084)

We already have hasOneUse. Like llvm::Value we provide helper methods to
query the number of uses of a Value. Add unittests for Value, because
that was missing.

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Co-authored-by: Michael Maitland <michaelmaitland@meta.com>

mlir/lib/Bytecode/Reader/BytecodeReader.cpp

@@ -1993,8 +1993,7 @@ LogicalResult BytecodeReader::Impl::sortUseListOrder(Value value) {
   UseListOrderStorage customOrder =
       valueToUseListMap.at(value.getAsOpaquePointer());
   SmallVector<unsigned, 4> shuffle = std::move(customOrder.indices);
-  uint64_t numUses =
-      std::distance(value.getUses().begin(), value.getUses().end());
+  uint64_t numUses = value.getNumUses();
 
   // If the encoding was a pair of indices `(src, dst)` for every permutation,
   // reconstruct the shuffle vector for every use. Initialize the shuffle vector