feat: Enhance file search with core plugin and Omnisearch integration

- Introduces a new match_search_files tool for fuzzy/keyword search, integrating with Obsidian's core search plugin and updating Omnisearch integration for improved file search capabilities.
- Adds settings for selecting search backends (core plugin, Omnisearch, ripgrep) for both regex and match searches.
- Updates language files, prompts, and types to support the new functionality.
- Restructures search-related files for better organization.

src/components/chat-view/Markdown/MarkdownMatchSearchFilesBlock.tsx

@@ -0,0 +1,52 @@
+import { FileSearch } from 'lucide-react'
+import React from 'react'
+
+import { useApp } from "../../../contexts/AppContext"
+import { t } from '../../../lang/helpers'
+import { ApplyStatus, MatchSearchFilesToolArgs } from "../../../types/apply"
+import { openMarkdownFile } from "../../../utils/obsidian"
+
+export default function MarkdownMatchSearchFilesBlock({
+	applyStatus,
+	onApply,
+	path,
+	query,
+	finish
+}: {
+	applyStatus: ApplyStatus
+	onApply: (args: MatchSearchFilesToolArgs) => void
+	path: string,
+	query: string,
+	finish: boolean
+}) {
+	const app = useApp()
+
+	const handleClick = () => {
+		openMarkdownFile(app, path)
+	}
+
+	React.useEffect(() => {
+		if (finish && applyStatus === ApplyStatus.Idle) {
+			onApply({
+				type: 'match_search_files',
+				filepath: path,
+				query: query,
+				file_pattern: ".md",
+			})
+		}
+	}, [finish])
+
+	return (
+		<div
+			className={`infio-chat-code-block ${path ? 'has-filename' : ''}`}
+			onClick={handleClick}
+		>
+			<div className={'infio-chat-code-block-header'}>
+				<div className={'infio-chat-code-block-header-filename'}>
+					<FileSearch size={14} className="infio-chat-code-block-header-icon" />
+					<span>{t('chat.reactMarkdown.matchSearchInPath').replace('{query}', query).replace('{path}', path)}</span>
+				</div>
+			</div>
+		</div>
+	)
+}