Implementing configurable aggregation cardinality limit and collector emitting all views instead of last view

[PradSenn]

Fixes #

1. Cardinality of the Aggregation limit (2000) is hardcoded and no ability to configure as part of the meter/aggregation
2. Meter stores meter-name to storage in storage_registry_. When multiple views are added, the last view overrides the previous view, and collector can only emit the last view's metrics that are added.

1. Introducing cardinality as configurable parameter in AggregationConfig, and implementing the limit from AggregationConfig in Storage
2. Changing the storage_registry_ to keep track of view_name to storage, instead of metric_name to storage. So when multiple views are added, different view-names will be collected by collector.

Please provide a brief description of the changes here.

For significant contributions please make sure you have completed the following items:

• CHANGELOG.md updated for non-trivial changes
• Unit tests have been added
• Changes in public API reviewed

[linux-foundation-easycla]

• ✅login: PradSenn / (0b0bd4c)
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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.53%. Comparing base (dee5b0b) to head (0b0bd4c).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3298      +/-   ##
==========================================
+ Coverage   89.49%   89.53%   +0.04%     
==========================================
  Files         208      208              
  Lines        6497     6500       +3     
==========================================
+ Hits         5814     5819       +5     
+ Misses        683      681       -2     

Files with missing lines	Coverage Δ
...metry/sdk/metrics/aggregation/aggregation_config.h	100.00% <100.00%> (ø)
sdk/include/opentelemetry/sdk/metrics/meter.h	57.15% <ø> (ø)
...telemetry/sdk/metrics/state/async_metric_storage.h	94.60% <100.00%> (ø)
...entelemetry/sdk/metrics/state/attributes_hashmap.h	97.02% <100.00%> (+4.71%)	⬆️
...ntelemetry/sdk/metrics/state/sync_metric_storage.h	86.37% <100.00%> (ø)
sdk/src/metrics/meter.cc	82.50% <100.00%> (ø)
sdk/src/metrics/state/sync_metric_storage.cc	100.00% <100.00%> (ø)
sdk/src/metrics/state/temporal_metric_storage.cc	97.37% <100.00%> (ø)

... and 1 file with indirect coverage changes

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