Update DiscoverPeripheralUUIDs to Use Object Map for Performance

[ColeMurray]

When running a continuous scan, the discoverPeripheralUUIDs continues to grow. Over time, this leads to slow lookup, as the existing implementation is required to perform an O(n) search through an array for each packet received.

To improve performance, we convert the array to an object map, allowing for O(1) lookup. This leads to a 98% performance improvement.

[codecov-commenter]

Codecov Report

Merging #300 (bb82fe5) into master (084ef2b) will decrease coverage by 0.07%. The diff coverage is 100.00%.

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@@            Coverage Diff             @@
##           master     #300      +/-   ##
==========================================
- Coverage   91.86%   91.80%   -0.07%     
==========================================
  Files          24       24              
  Lines        2901     2903       +2     
==========================================
  Hits         2665     2665              
- Misses        236      238       +2     

Impacted Files	Coverage Δ
lib/hci-socket/gap.js	87.83% <100.00%> (-1.21%)	:arrow_down:
lib/noble.js	98.40% <100.00%> (ø)

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[ColeMurray]

@rzr Any additional feedback here?

[rzr]

More reviewers welcome . any testers around ?

Meanwhile you can rebase and squash those 2 commits