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]

• ✅login: AlaricWhitney / (95dcf65)

The committers listed above are authorized under a signed CLA.

[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 (95dcf65).
Report is 27 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   16893    +125     
=======================================
+ Hits       11490   11599    +109     
- Misses      4933    4946     +13     
- Partials     345     348      +3     

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 1 file with indirect coverage changes