feat(opentelemetry-configuration): creation of basic ConfigProvider

[maryliag]

Part of #5626

• Creates a basic configuration object with a few attributes. This object is based on configuration spec names and definitions 1. Following PRs will add more attributes
• Creates a ConfigProvider, that currently only initialize based on environment variables. This will be the component that will also be able to initialize based on a config file in a future PR
• README is currently very basic, once more concrete functionality is creates, it will get updates
• Because we will eventually get rid of the core package, I didn't want to create any dependency on it, but I required a few functions related to configuration that were on them, so I copied those files (environment and diagLogLevel), so we can eventually remove them from core and have everything configuration related in the same package
• Note: the root package.json has a big diff, looks like it updated a bunch of things with my pr, but I don't know how to get rid of those changes, looking for guidance here

[codecov]

Codecov Report

Attention: Patch coverage is 95.45455% with 3 lines in your changes missing coverage. Please review.

Project coverage is 95.01%. Comparing base (48538b4) to head (6eb5c13).

Files with missing lines	Patch %	Lines
...ntelemetry-configuration/src/utils/diagLogLevel.ts	72.72%	3 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5809   +/-   ##
=======================================
  Coverage   95.01%   95.01%           
=======================================
  Files         303      307    +4     
  Lines        7943     8009   +66     
  Branches     1607     1620   +13     
=======================================
+ Hits         7547     7610   +63     
- Misses        396      399    +3     

Files with missing lines	Coverage Δ
.../opentelemetry-configuration/src/ConfigProvider.ts	100.00% <100.00%> (ø)
...packages/opentelemetry-configuration/src/config.ts	100.00% <100.00%> (ø)
...entelemetry-configuration/src/utils/environment.ts	100.00% <100.00%> (ø)
...ntelemetry-configuration/src/utils/diagLogLevel.ts	72.72% <72.72%> (ø)

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.