Aws bedrock llm support

[jasonjkeller]

This PR achieves code completion for the Java Agent - AIM Support (Bedrock) milestone.

It adds:

• Instrumentation for AWS Bedrock and supported LLM models
• Adds new API: void recordLlmFeedbackEvent(Map<String, Object> llmFeedbackEventAttributes)
• Adds new API: void setLlmTokenCountCallback(LlmTokenCountCallback llmTokenCountCallback)

It adheres to the following agent specs:

• https://source.datanerd.us/agents/agent-specs/blob/main/LLMs.md
• https://source.datanerd.us/agents/agent-specs/blob/main/APIs/llm_record_feedback.md
• https://source.datanerd.us/agents/agent-specs/blob/main/APIs/llm_token_count.md

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 52.58621% with 55 lines in your changes are missing coverage. Please review.

Project coverage is 69.98%. Comparing base (4060a06) to head (70736f0). Report is 1 commits behind head on main.

Files	Patch %	Lines
...c/agent/bridge/aimonitoring/AiMonitoringUtils.java	0.00%	22 Missing :warning:
...c/agent/attributes/LlmEventAttributeValidator.java	0.00%	11 Missing :warning:
...c/agent/service/analytics/InsightsServiceImpl.java	26.66%	10 Missing and 1 partial :warning:
...idge/aimonitoring/LlmTokenCountCallbackHolder.java	0.00%	5 Missing :warning:
...m/newrelic/agent/model/LlmCustomInsightsEvent.java	0.00%	2 Missing :warning:
...in/java/com/newrelic/agent/TransactionApiImpl.java	0.00%	2 Missing :warning:
...nt/src/main/java/com/newrelic/agent/AgentImpl.java	0.00%	1 Missing :warning:
...com/newrelic/opentelemetry/OpenTelemetryAgent.java	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1837 +/- ## ============================================ - Coverage 70.86% 69.98% -0.88% + Complexity 9973 9892 -81 ============================================ Files 829 835 +6 Lines 39984 40096 +112 Branches 6058 6068 +10 ============================================ - Hits 28333 28061 -272 - Misses 8924 9350 +426 + Partials 2727 2685 -42 ```

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