feat: adding instrumentation support for mongo-driver/v2

[AlaricWhitney]

Adding the mongo-driver/v2 instrumentation.

This is a copy/paste of the v1 instrumentation, and was modified to adhere to the mongo-driver/v2 requirements.

Notable differences:

• mtest was removed in v2. Replaced with drivertest in the unit testing.

This addresses PR #6419

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: AlaricWhitney / name: Alaric Whitney (95dcf65, 24b5f1e)

[codecov]

Codecov Report

Attention: Patch coverage is 82.40000% with 22 lines in your changes missing coverage. Please review.

Project coverage is 68.6%. Comparing base (00786cc) to head (24b5f1e).
Report is 52 commits behind head on main.

Files with missing lines	Patch %	Lines
...ngodb.org/mongo-driver/v2/mongo/otelmongo/mongo.go	80.2%	13 Missing and 5 partials ⚠️
...rg/mongo-driver/v2/mongo/otelmongo/test/version.go	60.0%	2 Missing ⚠️
...odb.org/mongo-driver/v2/mongo/otelmongo/version.go	60.0%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #6539     +/-   ##
=======================================
+ Coverage   68.5%   68.6%   +0.1%     
=======================================
  Files        200     204      +4     
  Lines      16768   16906    +138     
=======================================
+ Hits       11490   11606    +116     
- Misses      4933    4950     +17     
- Partials     345     350      +5     

Files with missing lines	Coverage Δ
...godb.org/mongo-driver/v2/mongo/otelmongo/config.go	100.0% <100.0%> (ø)
...rg/mongo-driver/v2/mongo/otelmongo/test/version.go	60.0% <60.0%> (ø)
...odb.org/mongo-driver/v2/mongo/otelmongo/version.go	60.0% <60.0%> (ø)
...ngodb.org/mongo-driver/v2/mongo/otelmongo/mongo.go	80.2% <80.2%> (ø)

... and 3 files with indirect coverage changes

[dmathieu]

cc @prestonvasquez for review?

[prestonvasquez]

@AlaricWhitney Thank you for putting this together. I wanted to let you know that I'll be reviewing this in stages, as my schedule allows.

[prestonvasquez]

Suggested change

	// Package otelmongo instruments go.mongodb.org/mongo-driver/mongo.
	// Package otelmongo instruments go.mongodb.org/mongo-driver/v2/mongo.

[prestonvasquez]

Suggested change

	// This package is compatible with v0.2.0 of
	// go.mongodb.org/mongo-driver/mongo.

MongoDB's Go Driver has a major version compatibility guarantee, so this information is necessary for v2.

[prestonvasquez]

We should update this to note that the code was copied from a specific instance of the v1 instrumentation.