Fixing #270763 - Move clang-tidy integration to nb contrib
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Fixing #270763 - Move clang-tidy integration to nb contrib - move wrapper
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Fixing #270763 - Move clang-tidy integration to nb contrib - sign nbm
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Fixing #270763 - Move clang-tidy integration to nb contrib - move tests
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Fixing #270763 - Move clang-tidy integration to nb contrib - data for a new test
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Fixed #270839 - [clang-tidy] Group checks in Editor hints
(transplanted from 35b6125ef00c470655dac6673075f5c12ec74593)

 #include <vector>

 using namespace std;

 int loops() {

     const int N = 5;

     int arr[] = {1, 2, 3, 4, 5};

     vector<int> v;

     v.push_back(1);

     v.push_back(2);

     v.push_back(3);

     // safe conversion

     for (auto & elem : arr)

         cout << elem;

     // reasonable conversion

     for (auto & elem : v)

         cout << elem;

     // reasonable conversion

     for (auto & elem : v)

         cout << elem;

 }