expose compiler as library

[samuelstroschein]

Context

It's useful to have the compiler exported as library to enable various use cases.

• extending the compiler to interpolate components without first class support discord
• don't emit prettierignore, gitignore files do not generate .gitignore and .prettierignore files (or offer option to disable generation) #189 (comment)
• calling compile on server startup (instead of the cli, or build step)

Proposal

Expose the compiler to give three options of using Paraglide JS:

1. a cli command
2. a bundler plugin
3. as library (calling compile on the fly)

[tomas-correia]

Looking forward to this.

It's helpful to be able to trigger compilation in watch mode from my code when I'm already using a watch mode to watch for changes in my code and not using a bundler.

For example, I'm using TSX in watch mode to run TypeScript and watch for changes. It's not possible to trigger the Paraglide compile watch command and TSX watch mode at the same time without some conccurrent scripts package or 2 terminal windows.