`readability-inconsistent-declaration-parameter-name` shouldn't trigger on variadic template names

[heinrich5991]

template<typename... Args>
void variadic_function(Args... args)
{
}

template<> inline void variadic_function(int foo) {} // readability-inconsistent-declaration-parameter-name
template<> inline void variadic_function(int args, int foo) {} // no warning
template<> inline void variadic_function(int foo, int args) {} // readability-inconsistent-declaration-parameter-name
template<> inline void variadic_function(int foo, int bar) {} // readability-inconsistent-declaration-parameter-name

I think readability-inconsistent-declaration-parameter-name shouldn't trigger on variadic arguments. It doesn't really make sense to name the first argument the same as an argument group.

[llvmbot]

@llvm/issue-subscribers-clang-tidy

Author: None (heinrich5991)

``` template<typename... Args> void variadic_function(Args... args) { }

template<> inline void variadic_function(int foo) {} // readability-inconsistent-declaration-parameter-name
template<> inline void variadic_function(int args, int foo) {} // no warning
template<> inline void variadic_function(int foo, int args) {} // readability-inconsistent-declaration-parameter-name
template<> inline void variadic_function(int foo, int bar) {} // readability-inconsistent-declaration-parameter-name

I think `readability-inconsistent-declaration-parameter-name` shouldn't trigger on variadic arguments. It doesn't really make sense to name the first argument the same as an argument group.
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