Ignore config port

[sheetalkamat]

Port of microsoft/TypeScript#62477

[Copilot]

Pull Request Overview

This PR ports TypeScript's --ignoreConfig command line option feature from the upstream repository. The option allows users to explicitly ignore tsconfig.json files and compile with command line options and files only.

Key changes:

• Added --ignoreConfig command line option and help text
• Implemented logic to skip tsconfig.json discovery when the option is enabled
• Added error message for when files are specified but tsconfig exists without --ignoreConfig

Reviewed Changes

Copilot reviewed 28 out of 28 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
internal/core/compileroptions.go	Added IgnoreConfig field to CompilerOptions struct
internal/tsoptions/parsinghelpers.go	Added parsing logic for ignoreConfig option
internal/tsoptions/declscompiler.go	Added command line option declaration for ignoreConfig
internal/execute/tsc.go	Implemented core logic for ignoring config files and error handling
internal/diagnostics/extraDiagnosticMessages.json	Added diagnostic messages for the new feature
internal/diagnostics/diagnostics_generated.go	Generated diagnostic message constants
internal/execute/tsctests/tsc_test.go	Added comprehensive test cases for the feature
testdata/baselines/*	Updated test baselines to include new help text and test outputs