Add one-click installers for Linux, Windows, and MacOS (#146)

* feat: Add installers for linux, windows, and macos

* docs: Update README

* pre-commit fix styles

* Update installers and README

* Remove env vars check and fix paths

* Update installers:
* Remove start.py and move install and launch part back to .sh/.bat
* Add conda deactivate
* Make messages more informative

* Improve kotaemon based on insights from projects (#147)

- Include static files in the package.
- More reliable information panel. Faster & not breaking randomly.
- Add directory upload.
- Enable zip file to upload.
- Allow setting endpoint for the OCR reader using environment variable.

* feat: Add installers for linux, windows, and macos

* docs: Update README

* pre-commit fix styles

* Update installers and README

* Remove env vars check and fix paths

* Update installers:
* Remove start.py and move install and launch part back to .sh/.bat
* Add conda deactivate
* Make messages more informative

* Make macOS installer runable and improve Windows, Linux installers

* Minor fix macos commands

* installation should pause before exit

* Update Windows installer: add a new label to exit function with error

* put install_dir to .gitignore

* chore: Add comments to clarify the 'end' labels

---------

Co-authored-by: Duc Nguyen (john) <trungduc1992@gmail.com>
Co-authored-by: ian <ian@cinnamon.is>

.gitignore

@@ -464,3 +464,6 @@ S.gpg-agent*
 .vscode/settings.json
 examples/example1/assets
 storage/*
+
+# Conda and env storages
+install_dir/