feat: Adds support for Quarto Shiny files

[andyquinterom]

Closes #76

Example on how to use with router is here: https://github.com/ixpantia/faucet-router-example

CLI example:

~/p/e/qmd (main|✔) [2]$ faucet start --type quarto-shiny
[2024-07-04T04:36:08Z INFO  faucet] Building the faucet server...
[2024-07-04T04:36:08Z INFO  faucet] Using load balancing strategy: Some(RoundRobin)
[2024-07-04T04:36:08Z INFO  faucet] Will spawn 16 workers
[2024-07-04T04:36:08Z INFO  faucet] Using worker type: QuartoShiny
[2024-07-04T04:36:08Z INFO  faucet] Using IP extractor: ClientAddr
[2024-07-04T04:36:08Z INFO  faucet] Will bind to: 127.0.0.1:3838
[2024-07-04T04:36:08Z INFO  faucet] Using workdir: "."
[2024-07-04T04:36:08Z INFO  faucet] Using Rscript command: "Rscript"
[2024-07-04T04:36:08Z INFO  faucet] Using quarto command: "quarto"
[2024-07-04T04:36:08Z INFO  faucet] Round robin load balancing strategy specified for shiny, switching to IP hash.
[2024-07-04T04:36:08Z ERROR faucet] Failed to invoke R for Worker::1: Missing argument: qmd
[2024-07-04T04:36:08Z ERROR faucet] Exiting...
[2024-07-04T04:36:08Z ERROR faucet] Failed to invoke R for Worker::3: Missing argument: qmd
[2024-07-04T04:36:08Z ERROR faucet] Exiting...
[2024-07-04T04:36:08Z ERROR faucet] Failed to invoke R for Worker::2: Missing argument: qmd
~/p/e/qmd (main|✔) [1]$

If we don't specify the qmd argument then we get a very clear error message.

Once we include the path in the qmd argument it works!

~/p/e/qmd (main|✔) $ faucet start --type quarto-shiny --qmd old_faithful.qmd -w 1
[2024-07-04T04:37:21Z INFO  faucet] Building the faucet server...
[2024-07-04T04:37:21Z INFO  faucet] Using load balancing strategy: Some(RoundRobin)
[2024-07-04T04:37:21Z INFO  faucet] Will spawn 1 workers
[2024-07-04T04:37:21Z INFO  faucet] Using worker type: QuartoShiny
[2024-07-04T04:37:21Z INFO  faucet] Using IP extractor: ClientAddr
[2024-07-04T04:37:21Z INFO  faucet] Will bind to: 127.0.0.1:3838
[2024-07-04T04:37:21Z INFO  faucet] Using workdir: "."
[2024-07-04T04:37:21Z INFO  faucet] Using Rscript command: "Rscript"
[2024-07-04T04:37:21Z INFO  faucet] Using quarto command: "quarto"
[2024-07-04T04:37:21Z INFO  faucet] Round robin load balancing strategy specified for shiny, switching to IP hash.
[2024-07-04T04:37:21Z INFO  faucet] Listening on http://127.0.0.1:3838
[2024-07-04T04:37:21Z INFO  faucet] Starting process 1529415 for Worker::1 on port 44641
[2024-07-04T04:37:22Z WARN  Worker::1] Loading required namespace: shiny
[2024-07-04T04:37:22Z WARN  Worker::1]
[2024-07-04T04:37:22Z WARN  Worker::1]
[2024-07-04T04:37:22Z WARN  Worker::1] processing file: old_faithful.qmd
[2024-07-04T04:37:22Z WARN  Worker::1] 1/5
[2024-07-04T04:37:22Z WARN  Worker::1] 2/5 [unnamed-chunk-1]
[2024-07-04T04:37:22Z WARN  Worker::1] 3/5
[2024-07-04T04:37:22Z WARN  Worker::1] 4/5 [unnamed-chunk-2]
[2024-07-04T04:37:22Z WARN  Worker::1] 5/5
[2024-07-04T04:37:22Z WARN  Worker::1] output file: old_faithful.knit.md
[2024-07-04T04:37:22Z WARN  Worker::1]
[2024-07-04T04:37:22Z WARN  Worker::1] pandoc
[2024-07-04T04:37:22Z WARN  Worker::1]   to: html
[2024-07-04T04:37:22Z WARN  Worker::1]   output-file: old_faithful.html
[2024-07-04T04:37:22Z WARN  Worker::1]   standalone: true
[2024-07-04T04:37:22Z WARN  Worker::1]   section-divs: true
[2024-07-04T04:37:22Z WARN  Worker::1]   html-math-method: mathjax
[2024-07-04T04:37:22Z WARN  Worker::1]   wrap: none
[2024-07-04T04:37:22Z WARN  Worker::1]   default-image-extension: png
[2024-07-04T04:37:22Z WARN  Worker::1]
[2024-07-04T04:37:22Z WARN  Worker::1] metadata
[2024-07-04T04:37:22Z WARN  Worker::1]   document-css: false
[2024-07-04T04:37:22Z WARN  Worker::1]   link-citations: true
[2024-07-04T04:37:22Z WARN  Worker::1]   date-format: long
[2024-07-04T04:37:22Z WARN  Worker::1]   lang: en
[2024-07-04T04:37:22Z WARN  Worker::1]   title: Old Faithful
[2024-07-04T04:37:22Z WARN  Worker::1]   server:
[2024-07-04T04:37:22Z WARN  Worker::1]     type: shiny
[2024-07-04T04:37:22Z WARN  Worker::1]
[2024-07-04T04:37:23Z WARN  Worker::1] Loading required package: shiny
[2024-07-04T04:37:23Z WARN  Worker::1] Browse at http://localhost:44641/
[2024-07-04T04:37:23Z WARN  Worker::1]
[2024-07-04T04:37:23Z WARN  Worker::1]
[2024-07-04T04:37:23Z INFO  faucet] Worker::1 is online and ready to serve connections