Add front-end Electron application for Khoj local file syncing (#473)

* Initial version - setup a file-push architecture for generating embeddings with Khoj
* Use state.host and state.port for configuring the URL for the indexer
* Fix parsing of PDF files
* Read markdown files from streamed data and update unit tests
* On application startup, load in embeddings from configurations files, rather than regenerating the corpus based on file system
* Init: refactor indexer/batch endpoint to support a generic file ingestion format
* Add features to better support indexing from files sent by the desktop client
* Initial commit with Electron application
- Adds electron app
* Add import for pymupdf, remove import for pypdf
* Allow user to configure khoj host URL
* Remove search type configuration from index.html
* Use v1 path for current indexer routes

src/interface/desktop/package.json

@@ -0,0 +1,25 @@
+{
+  "name": "Khoj",
+  "homepage": ".",
+  "productName": "Khoj",
+  "version": "1.0.0",
+  "description": "Scaffolding for the desktop entrypoint to Khoj",
+  "main": "main.js",
+  "repository": "\"https://github.com/khoj-ai/khoj\"",
+  "author": "Khoj <team@khoj.dev>",
+  "license": "MIT",
+  "private": false,
+  "devDependencies": {
+    "electron": "26.1.0"
+  },
+  "scripts": {
+    "start": "yarn electron ."
+  },
+  "dependencies": {
+    "@todesktop/runtime": "^1.3.0",
+    "axios": "^1.5.0",
+    "cron": "^2.4.3",
+    "electron-store": "^8.1.0",
+    "fs": "^0.0.1-security"
+  }
+}