chore: enable deno workspaces

Deno workspaces enable JSR dependencies to resolve to local copies.
This essentially turns all of the packages' tests into tests for `@libs/testing`.

.github/deno_config.ts

@@ -10,7 +10,7 @@ const root = fromFileUrl(import.meta.resolve("../"))
 const global = JSONC.parse(await Deno.readTextFile(resolve(root, "deno.jsonc"))) as Record<string, unknown>
 const imports = { "@std/jsonc": "jsr:@std/jsonc@0.224.0", "@std/yaml": "jsr:@std/yaml@0.224.0" } as record<string>
 const log = new Logger()
-const order = ["icon", "name", "version", "description", "keywords", "license", "author", "funding", "homepage", "playground", "supported", "repository", "npm", "deno.land/x", "exports", "unstable", "lock", "imports", "test:permissions", "tasks", "lint", "fmt"]
+const order = ["icon", "name", "version", "description", "keywords", "license", "author", "funding", "homepage", "playground", "supported", "repository", "npm", "deno.land/x", "exports", "unstable", "lock", "imports", "test:permissions", "tasks", "lint", "fmt", "workspaces"]
 
 // Load local configurations
 const packages = []
@@ -47,7 +47,7 @@ for await (const { path } of expandGlob(`*/deno.jsonc`, { root })) {
   // Register local imports
   for (const [key, value] of Object.entries(local.imports ?? {})) {
     if ((key in imports) && (imports[key] !== value)) {
-      log.warn({ package: packages.at(-1), dependency: key }).warn("previous registered with a different version")
+      log.warn({ package: packages.at(-1), dependency: key }).warn("previously registered with a different version")
     }
     imports[key] = value
   }

deno.jsonc

@@ -90,5 +90,18 @@
       "**/wasm_*",
       "**/*.mjs"
     ]
-  }
+  },
+  "workspaces": [
+    "bundle/",
+    "crypto/",
+    "diff/",
+    "logger/",
+    "orm/",
+    "qrcode/",
+    "reactive/",
+    "run/",
+    "testing/",
+    "typing/",
+    "xml/"
+  ]
 }