Use Apache DataSketches for approximate aggregate functions

[gatesn]

Introduces approximate aggregate functions using Apache DataSketches.

This PR specifically wraps up:

• HyperLogLog
• T-Digest

[codspeed-hq]

Merging this PR will improve performance by 14.02%

⚠️ Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

⚡ 2 improved benchmarks
✅ 1206 untouched benchmarks

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
⚡	Simulation	take_map[(0.1, 0.5)]	1,111.5 µs	974.8 µs	+14.02%
⚡	Simulation	take_map[(0.1, 1.0)]	1.8 ms	1.7 ms	+10.72%

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_{Comparing ngates/data-sketches (e85ca7f) with develop (ff12040)}