Add instrument advisory parameter

[Nevay]

See spec, adds an optional $advisory parameter to all Meter::createXXX() methods.

Use case http.server.request.duration:

This metric SHOULD be specified with ExplicitBucketBoundaries of [ 0.005, 0.01, 0.025, 0.05, 0.075, 0.1, 0.25, 0.5, 0.75, 1, 2.5, 5, 7.5, 10 ].

[codecov]

Codecov Report

Merging #1186 (c9d2bb6) into main (a6d15cf) will decrease coverage by 0.06%.
The diff coverage is 68.88%.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #1186      +/-   ##
============================================
- Coverage     84.35%   84.29%   -0.06%     
- Complexity     2193     2196       +3     
============================================
  Files           282      282              
  Lines          6224     6245      +21     
============================================
+ Hits           5250     5264      +14     
- Misses          974      981       +7     

Flag	Coverage Δ
7.4	82.93% <68.88%> (-0.06%)	⬇️
8.0	84.22% <68.88%> (-0.06%)	⬇️
8.1	84.35% <68.88%> (-0.06%)	⬇️
8.2	84.35% <68.88%> (-0.06%)	⬇️
8.3	84.35% <68.88%> (-0.06%)	⬇️

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Files	Coverage Δ
...rc/SDK/Metrics/DefaultAggregationProviderTrait.php	100.00% <100.00%> (ø)
src/SDK/Metrics/MetricReader/ExportingReader.php	73.84% <100.00%> (ø)
src/SDK/Metrics/Instrument.php	0.00% <0.00%> (ø)
src/API/Metrics/Noop/NoopMeter.php	0.00% <0.00%> (ø)
src/SDK/Metrics/Meter.php	92.00% <81.25%> (-2.84%)	⬇️

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