Add support to remove instruments

[atoulme]

This is a POC implementation to support open-telemetry/opentelemetry-specification#2232

[codecov]

Codecov Report

❌ Patch coverage is 82.35294% with 9 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.13%. Comparing base (9fe48c9) to head (0d7ab38).
⚠️ Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
...va/io/opentelemetry/api/metrics/DoubleCounter.java	66.66%	1 Missing ⚠️
...java/io/opentelemetry/api/metrics/DoubleGauge.java	66.66%	1 Missing ⚠️
.../io/opentelemetry/api/metrics/DoubleHistogram.java	66.66%	1 Missing ⚠️
...opentelemetry/api/metrics/DoubleUpDownCounter.java	66.66%	1 Missing ⚠️
...java/io/opentelemetry/api/metrics/LongCounter.java	66.66%	1 Missing ⚠️
...n/java/io/opentelemetry/api/metrics/LongGauge.java	66.66%	1 Missing ⚠️
...va/io/opentelemetry/api/metrics/LongHistogram.java	66.66%	1 Missing ⚠️
...o/opentelemetry/api/metrics/LongUpDownCounter.java	66.66%	1 Missing ⚠️
...metrics/internal/state/WriteableMetricStorage.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #7792      +/-   ##
============================================
- Coverage     90.17%   90.13%   -0.04%     
- Complexity     7190     7206      +16     
============================================
  Files           814      823       +9     
  Lines         21724    21775      +51     
  Branches       2129     2130       +1     
============================================
+ Hits          19589    19627      +38     
- Misses         1467     1478      +11     
- Partials        668      670       +2     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.