Feat: Add HostNameInCertificate for strict encryption

[shueybubbles]

Fixes #504
Since ODBC sqlcmd uses -F for the host name, we are going to follow suit and switch to --vertical as the parameter to turn on vertical output formatting.

sqlcmd -S someserver -Nstrict -F *.mydomain.com

[Copilot]

Pull Request Overview

Adds support for specifying the host name to validate in the server certificate when using strict encryption.

• Introduces HostNameInCertificate in ConnectSettings and includes it in the connection string query parameters.
• Enhances CLI parsing to accept -Ns:<hostname> or -Nstrict:<hostname> and updates related tests.
• Updates documentation and error messages to describe the new switch behavior.

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
pkg/sqlcmd/sqlcmd_test.go	Added a test case for strict encryption with hostname in certificate
pkg/sqlcmd/connect.go	Introduced HostNameInCertificate field and query-string addition
cmd/sqlcmd/sqlcmd_test.go	Extended CLI argument tests and encryption option tests
cmd/sqlcmd/sqlcmd.go	Updated flag parsing, regex for strict encryption, and help text
README.md	Documented the new strict-encryption hostname argument

Comments suppressed due to low confidence (4)

cmd/sqlcmd/sqlcmd_test.go:112

• Add an assertion to verify that args.HostNameInCertificate is correctly populated for the -Ns:myserver.domain.com case to ensure full parsing coverage.

			return args.EncryptConnection == "s:myserver.domain.com"

README.md:133

• Clarify the switch syntax by showing both shorthand and full forms, e.g. -Ns:<hostname> or -Nstrict:<hostname>, to avoid confusion with the bracketed notation.

  - To provide the value of the host name in the server certificate when using strict encryption, append the name after a `:` to the `-Ns[trict]`. Example: `-Ns:myhost.domain.com`

pkg/sqlcmd/connect.go:61

• [nitpick] Add a note that this field only applies when Encrypt is set to strict, to clarify its intended usage.

	// The HostNameInCertificate is the name to use for the host in the certificate validation

cmd/sqlcmd/sqlcmd_test.go:588

• [nitpick] Rename the test struct field hostnameincertificate to hostnameInCertificate for consistency with Go naming conventions and the production struct field.

		hostnameincertificate string

[shueybubbles]

Change of plans....next iteration, I will change -F to be for the host name, and change vertical formatting to be set using --vert[ical]
Matching ODBC is probably a better story, considering there are not likely a large number of users out there using vertical formatting in automation.

[shueybubbles]

i will generate new localization files after merging the driver update change when it goes to main, just to avoid dealing with merge conflicts.