feat: refactor credentials entry struct to support more sub types

[Sylfwood]

Added support for all these subtypes:

• Credential/AccessCode
• Credential/ApiKey
• Credential/AzureServicePrincipal
• Credential/ConnectionString
• Credential/Default
• Credential/PrivateKey

[Copilot]

Pull Request Overview

This PR refactors the credentials entry implementation to support multiple subtypes by introducing a generic Entry model, dynamic JSON (un)marshalling, and a unified EntryCredentialService.

• Introduce Entry with a factory-based JSON unmarshaller to handle various credential subtypes.
• Migrate keyword parsing helpers into utils.go for reuse.
• Replace the old EntryUserCredentialService with the new generic EntryCredentialService and bump version to 0.12.0.

Reviewed Changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
utils.go	Adds keywordsToSlice and sliceToKeywords for parsing and formatting tag strings.
entries.go	Defines generic Entry type, EntryData interface, factories, and JSON (un)marshalling logic.
entry_credential.go	Implements EntryCredentialService supporting default and access-code subtypes.
authentication.go	Updates client initialization to use the new Credential service.
VERSION	Bumps package version from 0.11.0 to 0.12.0.

Comments suppressed due to low confidence (4)

utils.go:9

• [nitpick] The variable name spacedTag is ambiguous; consider renaming it to something like inQuotes or insideQuote for clearer intent.

var spacedTag bool

utils.go:28

• Consider adding unit tests for sliceToKeywords to verify correct quoting behavior for tags that contain spaces.

func sliceToKeywords(kw []string) string {

entry_credential.go:102

• Typo in function name: Enpoint should be Endpoint to match the constant entryPublicEndpoint.

func entryPublicEnpointReplacer(vaultId string, entryId string) string {

entry_credential.go:107

• Typo in function name: Enpoint should be Endpoint to match the constant entryBasePublicEndpoint.

func entryPublicBaseEnpointReplacer(vaultId string) string {

[rbstp]

LGTM