Add polyfills to make apache-arrow work in Node@14

[kravets-levko]

After upgrading apache-arrow in #180 (which was needed to fix#150), this library stopped working in some Nodejs versions. Turns out that apache-arrow@13 started to massively use Array.at/TypedArray.at methods which became available only in Node@16.6.0.

Even if we forget that apache-arrow declares a support for Node@12 (at least in its package.json file), we had two options:

1. stop supporting older Nodejs versions;
2. add polyfills for missing methods.

I ended up implementing own polyfill with this reasoning:

1. we still have users that use Node 16 or even 14 (but for option 1 we'd have to declare support for even newer versions);
2. basically, only one method is currently needed (Array.at/TypedArray.at can use same implementation);
3. the needed method is really simple (so even using core-js would be absolute overkill).

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (086f5bb) 90.41% compared to head (dd20df9) 90.51%.

Additional details and impacted files

@@ Coverage Diff @@## main #219 +/- ##
==========================================
+ Coverage 90.41% 90.51% +0.10% 
==========================================
Files 61 62 +1 Lines 1408 1423 +15 Branches 232 238 +6 ==========================================
+ Hits 1273 1288 +15 
Misses 84 84 Partials 51 51 

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