Merge | LocalDbConfig

[benrr101]

Description: Finally back on track for merging the netfx and netcore projects. In this exciting installment, we're merging the LocalDbConfig file. This file contains a few class definitions that are used to provide an object model for accessing the program's configuration file. They only apply to netfx, and can be easily moved into the common project, tagged as netfx, and wrapped in #if NETFRAMEWORK. The file was also split into separate files for class and placed in a folder that better represents the namespace (Microsoft.Data.SqlClient.LocalDb).

Testing: No functional changes, just moving things around.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 17 lines in your changes missing coverage. Please review.

Project coverage is 72.79%. Comparing base (17cb0b0) to head (6d7191e).
Report is 10 commits behind head on main.

Files with missing lines	Patch %	Lines
...Client/LocalDb/LocalDbInstancesCollection.netfx.cs	0.00%	10 Missing ⚠️
...src/Microsoft/Data/SqlClient/LocalDBAPI.Windows.cs	0.00%	4 Missing ⚠️
.../SqlClient/LocalDb/LocalDbInstanceElement.netfx.cs	0.00%	2 Missing ⚠️
...lient/LocalDb/LocalDbConfigurationSection.netfx.cs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@ Coverage Diff @@## main #3171 +/- ##
==========================================
- Coverage 72.96% 72.79% -0.18% 
==========================================
Files 283 284 +1 Lines 58997 59110 +113 ==========================================
- Hits 43048 43029 -19 - Misses 15949 16081 +132 

Flag	Coverage Δ
addons	92.58% <ø> (ø)
netcore	75.48% <0.00%> (-0.25%)	⬇️
netfx	71.14% <0.00%> (-0.22%)	⬇️

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