Support disabling of string constant remapping

[Goooler]

• Closes The plugin changes constants with values similar to package names #232.
• Ports [MSHADE-156] - Allow non relocating string literals apache/maven-shade-plugin#249.

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• CHANGELOG's "Unreleased" section has been updated, if applicable.

[Copilot]

Pull Request Overview

This PR adds support for disabling string constant remapping by introducing a new flag which, when enabled, prevents string literals from being remapped. Key changes include:

• Adding a new property (skipStringLiteral) in both SimpleRelocator and Relocator interfaces.
• Updating RelocatorRemapper’s mapping logic to respect the new flag.
• Adjusting functional tests and documentation to verify and record the new behavior.

Reviewed Changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/relocation/SimpleRelocator.kt	Added skipStringLiteral property and updated equality/hashCode.
src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/relocation/Relocator.kt	Introduced skipStringLiteral in the Relocator interface.
src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/internal/RelocatorRemapper.kt	Modified remapping logic to conditionally skip string literal remapping.
src/functionalTest/kotlin/com/github/jengelman/gradle/plugins/shadow/RelocationTest.kt	Added tests to verify behavior with both enabled and disabled flag.
docs/changes/README.md	Updated changelog to document the new feature.

Files not reviewed (1)

• api/shadow.api: Language not supported

[Copilot]

The use of path.indexOf('.') does not check for -1, which could lead to an exception if the input does not contain a period. Consider adding validation or a fallback mechanism to handle such cases.

Suggested change

	fun mapPath(path: String): String = map(path.substring(0, path.indexOf('.')))
	fun mapPath(path: String): String {
	val dotIndex = path.indexOf('.')
	return if (dotIndex == -1) {
	path // Return the original path if no period is found
	} else {
	map(path.substring(0, dotIndex))
	}
	}