Send user agent info as a new feature extension to server

[machavan]

Description:
By enhancing telemetry for SQL drivers, we can achieve a more nuanced understanding of the operating environments in use. This capability enables us to make strategic decisions about testing and support, ultimately improving our efficiency and reducing costs. Adopting a structured and extensible approach to telemetry collection will ensure we gather the most relevant and useful data, facilitating continuous improvement in our processes.
The user agent information will be transported to the SQL Server via a new TDS Feature Extension (FE) in the LOGIN7 TDS message:

Name: USERAGENT
Identifier: 0x10
Data Length: max 256 bytes
Data: + UCS-2 encoded String

User agent string format:

<user agent version>|<driver type>|<driver version>|<os type>|<os version>|<architecture>|<runtime>

Sample

1|MS-JDBC|13.2.0|Windows|Windows 10.0.22600.0|amd64|OpenJDK 64-Bit Server VM 21.0.4+7-LTS

Testing:
-Added a new test to validate the generated user agent string max length
-Verified with SQL databases that are both disabled and enabled with accepting and handling this new user agent FE.
-All existing test cases exercise this code path since each login packet will include this new feature extension.

[codecov]

Codecov Report

❌ Patch coverage is 75.51020% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 56.39%. Comparing base (8f3ddc4) to head (db7880b).

Files with missing lines	Patch %	Lines
.../microsoft/sqlserver/jdbc/SQLServerConnection.java	77.08%	7 Missing and 4 partials ⚠️
...in/java/com/microsoft/sqlserver/jdbc/IOBuffer.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #2848      +/-   ##
============================================
+ Coverage     56.35%   56.39%   +0.04%     
- Complexity     4531     4550      +19     
============================================
  Files           151      151              
  Lines         34445    34494      +49     
  Branches       5741     5751      +10     
============================================
+ Hits          19410    19454      +44     
- Misses        12415    12421       +6     
+ Partials       2620     2619       -1     

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[muskan124947]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 3 pipeline(s).

[David-Engel]

Minor comment. Otherwise, LGTM.