Fix type detection of CLI params in v2 config parser

[bentsherman]

Spun off from #6760 (comment)

This PR applies the CLI type detection from the params block to also work with config params. When a CLI param overrides a config param, the CLI param is converted to the appropriate type based on the default param value in the config.

Type annotations can't be specified in the config like they can in the script, but we can almost always infer the intended type from the default value:

params.igenomes_ignore = false      // Boolean
params.max_cpus = 4                 // Integer
params.publish_mode = 'copy'        // String
params.config_profile_name = null   // (assume String)

Without this, users would have to assume that all config params are strings and convert them appropriately. But with this PR I think we can recover all of the functionality of the legacy type detection that users rely on, and even make it a bit more robust.

@ewels let me know if this change makes sense

[netlify]

✅ Deploy Preview for nextflow-docs-staging canceled.

Name	Link
🔨 Latest commit	6cc4a72
🔍 Latest deploy log	https://app.netlify.com/projects/nextflow-docs-staging/deploys/697906e061d4da000859c375