Only allow extract all on archives that are solid (some rars and 7zip only)

[adamhathcock]

Explicit exception for #960

[Copilot]

Pull Request Overview

This PR restricts the use of ExtractAllEntries() to only solid archives (some RAR formats) and 7Zip archives, throwing an explicit exception for non-solid archives. This addresses issue #960 by preventing misuse of the API on archive types that don't require sequential extraction.

Key Changes:

• Added validation in ExtractAllEntries() to throw InvalidOperationException for non-solid, non-7Zip archives
• Refactored test code to use ReaderFactory.Open() directly instead of ArchiveFactory.Open() followed by ExtractAllEntries()
• Added convenience Open() methods to ReaderFactory and RarReader for file path inputs

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/SharpCompress/Archives/AbstractArchive.cs	Added validation check to prevent ExtractAllEntries() on non-solid, non-7Zip archives
src/SharpCompress/Archives/IArchiveExtensions.cs	Changed ExtractToDirectory() to iterate archive entries directly instead of using ExtractAllEntries()
src/SharpCompress/Readers/ReaderFactory.cs	Added Open() overloads accepting file paths and FileInfo objects
src/SharpCompress/Readers/Rar/RarReader.cs	Added Open() overloads for single and multiple file paths
tests/SharpCompress.Test/ArchiveTests.cs	Updated tests to use direct entry iteration and removed redundant method overload
tests/SharpCompress.Test/Zip/ZipArchiveTests.cs	Replaced ArchiveFactory.Open() + ExtractAllEntries() with ReaderFactory.Open()
tests/SharpCompress.Test/Zip/ZipReaderTests.cs	Updated test to use ReaderFactory.Open() directly and added clarifying comment
tests/SharpCompress.Test/Rar/RarReaderTests.cs	Changed to use RarReader.Open() with explicit file list instead of archive

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