refactor: Restructure file search settings

This commit restructures the file search settings. The previously individual settings for file search method, regex search backend, match search backend, and ripgrep path have been grouped into a new filesSearchSettings object.

src/utils/prompt-generator.ts

@@ -182,7 +182,7 @@ export class PromptGenerator {
 			},
 		]
 
-		let filesSearchMethod = this.settings.filesSearchMethod
+		let filesSearchMethod = this.settings.filesSearchSettings.method
 		if (filesSearchMethod === 'auto' && this.settings.embeddingModelId && this.settings.embeddingModelId !== '') {
 			filesSearchMethod = 'semantic'
 		}
@@ -520,6 +520,7 @@ export class PromptGenerator {
 			this.app.vault.getRoot().path,
 			false,
 			mode,
+			this.settings.filesSearchSettings,
 			filesSearchMethod,
 			preferredLanguage,
 			this.diffStrategy,