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>

README.md

@@ -7,13 +7,23 @@ projects.
 
 ## Install
 
-```shell
-pip install kotaemon@git+ssh://git@github.com/Cinnamon/kotaemon.git
-```
+### Easy install
 
-## Contribute
+1. Clone the repository.
+2. Navigate to the `scripts` folder and start an installer that matches your OS:
+   - Linux: `run_linux.sh`
+   - Windows: `run_windows.bat`
+   - macOS: `run_macos.sh`
+3. After the installation, the installer will ask to launch the ktem's UI, answer to continue.
+4. If launched, the application will be available at `http://localhost:7860/`. Let's start exploring!
 
-### Setup
+Here is the setup and update strategy:
+
+- **Run `run_*` script**: This setup environment, including downloading Miniconda (in case Conda is not available in your machine) and installing necessary dependencies in `install_dir` folder.
+- **Launch the UI**: To launch the ktem's UI after initial setup or any changes, simply run `run_*` script again.
+- **Reinstall dependencies**: Simply delete the `install_dir/env` folder and run `run_*` script. The script will recreate the folder with fresh dependencies.
+
+### Manual install
 
 - Create conda environment (suggest 3.10)