feat: create standalone CLI for cocoindex (cocoindex-io#485)

* feat(flow): update text label to handle empty lines instead of color style

* feat: update to use standalone cocoindex cli

* feat: pass in `<module_path>:<flow_name>` directly in new CLI

* feat: only show relevant flows given ls targets

* feat: add function to parse app target and warn on flow name usage

* feat: add support for loading dot-env files

* feat: use `find_dotenv` for better path resolution

Author: lemorage

pyproject.toml

@@ -9,10 +9,13 @@ description = "With CocoIndex, users declare the transformation, CocoIndex creat
 authors = [{ name = "CocoIndex", email = "cocoindex.io@gmail.com" }]
 readme = "README.md"
 requires-python = ">=3.11"
-dependencies = ["sentence-transformers>=3.3.1", "click>=8.1.8", "rich>=14.0.0"]
+dependencies = ["sentence-transformers>=3.3.1", "click>=8.1.8", "rich>=14.0.0", "python-dotenv>=1.1.0"]
 license = "Apache-2.0"
 urls = { Homepage = "https://cocoindex.io/" }
 
+[project.scripts]
+cocoindex = "cocoindex.cli:cli"
+
 [tool.maturin]
 bindings = "pyo3"
 python-source = "python"