feat: add ADO.Net connection string synonyms

[dlevy-msft-sql]

Problem

The ADO.Net connection string format supports many parameter synonyms (e.g. App for Application Name, Connect Timeout for Connection Timeout), but the go-mssqldb driver only recognized a subset of them. Users migrating connection strings from .NET applications would find that common synonyms were silently ignored.

Tracked in #288 (original request) and #373 (scoped to non-auth synonyms).

Root Cause

The adoSynonyms map in msdsn/conn_str.go was missing 13 synonyms that are documented in the SqlConnection.ConnectionString reference.

Solution

Add the 13 missing non-authentication ADO.Net synonyms to the adoSynonyms map:

Synonym	Maps To
App	app name
Connect Timeout	connection timeout
Timeout	connection timeout
Failover Partner	failover partner
Failover Partner SPN	failover partner spn
Application Intent	applicationintent
Trust Server Certificate	trustservercertificate
Multi Subnet Failover	multisubnetfailover
Host Name In Certificate	hostnameincertificate
Server SPN	serverspn
Server Certificate	servercertificate
WSID	workstation id

Authentication-related synonyms (Integrated Security, Trusted_Connection, Authentication) are intentionally excluded as they are covered by PR #368 or require separate design work.

Changes

File	Change
msdsn/conn_str.go	Added 13 entries to adoSynonyms map; updated reference URL
msdsn/conn_str_test.go	Added 22 test cases covering all new synonyms

Testing

• go build ./... -- passes
• go test ./msdsn -v -count=1 -- all 19 tests pass (including 22 new sub-cases)
• No SQL Server required for these unit tests

Related Issues

• Closes feat: add remaining ADO.Net connection string synonyms #373
• Related to Add more ADO.Net synonyms to connection string parameters #288
• Complements PR feat: add ADO.Net Authentication connection string synonym and spaced value names #368 (auth-only synonyms)

[Copilot]

Pull request overview

Adds additional ADO.NET-style connection string keyword synonyms to the msdsn parser to improve compatibility with migrated .NET connection strings.

Changes:

• Extended adoSynonyms in msdsn/conn_str.go with additional non-auth ADO.NET keyword synonyms.
• Added unit test cases in msdsn/conn_str_test.go to validate the new synonyms, including a split-level test for Server Certificate.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
msdsn/conn_str.go	Adds new ADO.NET keyword synonyms mapping to the driver’s canonical parameter keys.
msdsn/conn_str_test.go	Adds test cases intended to cover the new synonyms, plus a direct splitConnectionString test for Server Certificate.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated no new comments.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.60%. Comparing base (99bd561) to head (0f937d9).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #374       +/-   ##
===========================================
+ Coverage   80.67%   96.60%   +15.93%     
===========================================
  Files          35       92       +57     
  Lines        6920    74361    +67441     
===========================================
+ Hits         5583    71840    +66257     
- Misses       1066     2186     +1120     
- Partials      271      335       +64     

Flag	Coverage Δ
unittests	96.53% <ø> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
msdsn/conn_str.go	90.08% <ø> (ø)

... and 59 files with indirect coverage changes

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