add nx schemas

[mdjohns]

This PR adds schemas for Nx's project.json and nx.json.

[github-actions]

Thanks for the PR!

This section of the codebase is owned by @madskristensen and @hyperupcall - if they write a comment saying "LGTM" then it will be merged.

[hyperupcall]

Thanks - unfortunately project.json is a bit too generic and will have too many false positives. Is there an alternative?

[mdjohns]

it looks like the conflict is with this:

schemastore/src/api/json/catalog.json

Lines 4596 to 4611 in 44a0c7e

	{
	"name": "project.json",
	"description": "ASP.NET vNext project configuration file",
	"fileMatch": ["project.json"],
	"url": "https://www.schemastore.org/project.json",
	"versions": {
	"1.0.0-beta3": "https://www.schemastore.org/project-1.0.0-beta3.json",
	"1.0.0-beta4": "https://www.schemastore.org/project-1.0.0-beta4.json",
	"1.0.0-beta5": "https://www.schemastore.org/project-1.0.0-beta5.json",
	"1.0.0-beta6": "https://www.schemastore.org/project-1.0.0-beta6.json",
	"1.0.0-beta8": "https://www.schemastore.org/project-1.0.0-beta8.json",
	"1.0.0-rc1": "https://www.schemastore.org/project-1.0.0-rc1.json",
	"1.0.0-rc1-update1": "https://www.schemastore.org/project-1.0.0-rc1.json",
	"1.0.0-rc2": "https://www.schemastore.org/project-1.0.0-rc2.json"
	}
	},

I'm not super familiar, but it appears to be a deprecated format according to Microsoft's docs (see here).

If I add project.json to the exclusions here, the validation succeeds for me locally:

schemastore/src/schema-validation.jsonc

Lines 287 to 294 in 44a0c7e

	"fileMatchConflict": [
	// Name conflicts must be avoided. Do not add additional items here
	"plugin.yml",
	".jsbeautifyrc",
	"info.json",
	"manifest.json",
	"*.cryproj"
	],

@hyperupcall thoughts on this solution? There's a comment that does explicitly say not to add additional exclusions, but I think it's unlikely that someone would be using Nx and this (maybe deprecated) Nuget format.

[madskristensen]

can you find a less generic name for the file match? Could you perhaps include the folder name that it always is located in, for instance?