Upgrade to Remix Auth v4 and use Arctic's OAuth2Client (#137)

This PR does two things

1. It upgrade the strategy to work with Remix Auth v4, the strategy uses
`@mjackson/headers` to work with cookies and accepts an optional
`cookie` configuration that fallbacks to `oauth2`, this cookie is used
as the name of the cookie the strategy will use to keep the state and
code verifier.

The `cookie` can also be an object to customize path, maxAge, secure,
httpOnly, etc.

2. It change how it works internally to use the new Arctic's
OAuth2Client, this way the strategy just instantiate the client and
coordinate with the request->response flow how to read from the URL and
cookies and how to direct, but the actual logic for OAuth2 is on the
client.

This has a side-effect that now an identity provider that doesn't really
follow the spec will not work, for those is better to create a custom
strategy.

package.json

@@ -3,16 +3,8 @@
 	"version": "2.4.0",
 	"description": "A strategy to use and implement OAuth2 framework for authentication with federated services like Google, Facebook, GitHub, etc.",
 	"license": "MIT",
-	"funding": [
-		"https://github.com/sponsors/sergiodxa"
-	],
-	"keywords": [
-		"remix",
-		"remix-auth",
-		"auth",
-		"authentication",
-		"strategy"
-	],
+	"funding": ["https://github.com/sponsors/sergiodxa"],
+	"keywords": ["remix", "remix-auth", "auth", "authentication", "strategy"],
 	"author": {
 		"name": "Sergio Xalambrí",
 		"email": "[email protected]",
@@ -36,53 +28,34 @@
 	"sideEffects": false,
 	"type": "module",
 	"engines": {
-		"node": "^18.0.0 || ^20.0.0 || >=20.0.0"
+		"node": "^20.0.0 || >=20.0.0"
 	},
-	"files": [
-		"build",
-		"package.json",
-		"README.md"
-	],
+	"files": ["build", "package.json", "README.md"],
 	"exports": {
 		".": "./build/index.js",
 		"./package.json": "./package.json"
 	},
 	"dependencies": {
-		"@oslojs/crypto": "^0.6.2",
+		"@mjackson/headers": "^0.8.0",
+		"@oslojs/crypto": "^1.0.1",
 		"@oslojs/encoding": "^1.0.0",
 		"@oslojs/oauth2": "^0.5.0",
-		"debug": "^4.3.4"
+		"arctic": "^2.3.0",
+		"debug": "^4.3.7"
 	},
 	"peerDependencies": {
-		"@remix-run/cloudflare": "^1.0.0 || ^2.0.0",
-		"@remix-run/node": "^1.0.0 || ^2.0.0",
-		"@remix-run/deno": "^1.0.0 || ^2.0.0",
-		"remix-auth": "^3.6.0"
-	},
-	"peerDependenciesMeta": {
-		"@remix-run/cloudflare": {
-			"optional": true
-		},
-		"@remix-run/node": {
-			"optional": true
-		},
-		"@remix-run/deno": {
-			"optional": true
-		}
+		"remix-auth": "^4.0.0"
 	},
 	"devDependencies": {
 		"@arethetypeswrong/cli": "^0.17.0",
-		"@biomejs/biome": "^1.8.3",
-		"@remix-run/node": "^2.8.1",
-		"@remix-run/server-runtime": "^2.8.1",
+		"@biomejs/biome": "^1.9.4",
 		"@total-typescript/tsconfig": "^1.0.4",
-		"@types/bun": "^1.0.12",
+		"@types/bun": "^1.1.13",
 		"@types/debug": "^4.1.12",
-		"consola": "^3.2.3",
-		"msw": "^2.2.13",
-		"remix-auth": "^3.6.0",
-		"typedoc": "^0.26.2",
-		"typedoc-plugin-mdn-links": "^3.1.25",
-		"typescript": "^5.4.5"
+		"msw": "^2.6.6",
+		"remix-auth": "^4.0.0",
+		"typedoc": "^0.26.11",
+		"typedoc-plugin-mdn-links": "^4.0.1",
+		"typescript": "^5.7.2"
 	}
 }