datasette install -e option

[simonw]

As seen in LLM and now in sqlite-utils too:

• sqlite-utils install -e option sqlite-utils#570

Useful for developing plugins, see tutorial at https://llm.datasette.io/en/stable/plugins/tutorial-model-plugin.html

[simonw]

Here's the diff for adding it to sqlite-utils: simonw/sqlite-utils@ef31210

[simonw]

Tested this locally with:

datasette install -e ../datasette-graphql

Running datasette plugins confirmed that the plugin had been installed.

[simonw]

Applied the same fix as here:

• This does not work: llm install -e '.[test]' llm#136