Delete `Collection+Only.swift`, `Duration+Seconds.swift`,
`FileManagerExtensions.swift`, `PipeAsStringHandler.swift`, and
`URLExtensions.swift` from `Sources/SwiftExtensions/`. The same
APIs now live in swift-tools-protocols as `@_spi(SourceKitLSP)
public` declarations.
Update each call site to add `@_spi(SourceKitLSP) import
ToolsProtocolsSwiftExtensions` next to the existing
`import SwiftExtensions`. Add the
`_ToolsProtocolsSwiftExtensionsForPlugin` dependency and the
`ToolsProtocolsSwiftExtensions=_ToolsProtocolsSwiftExtensionsForPlugin`
module alias to the `SwiftSourceKitClientPlugin` target in both
`Package.swift` and the corresponding `CMakeLists.txt`.
Rintaro Ishizaki
25harsh