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

.gitignore

@@ -12,6 +12,7 @@ __pycache__
 .vscode
 .env
 .venv/*
+todesktop.json
 
 # Build artifacts
 /src/khoj/interface/web/images
@@ -29,7 +30,7 @@ node_modules
 
 # Don't include the compiled obsidian main.js file in the repo.
 # They should be uploaded to GitHub releases instead.
-main.js
+src/interface/obsidian/main.js
 
 # Exclude sourcemaps
 *.map