Export ./bin/qmd + ./package.json for require.resolve consumers

Allows the Oivo CLI daemon to resolve the vendored qmd binary via
`createRequire(import.meta.url).resolve('@oivo/qmd/bin/qmd')` without
running into Node's ERR_PACKAGE_PATH_NOT_EXPORTED enforcement for
packages that declare an "exports" map.

./package.json is also exported so consumers can locate the package
root even through exports gating (standard fallback for tools that
need pkg.version, pkg.main, etc.).

package.json

@@ -9,7 +9,9 @@
     ".": {
       "import": "./dist/index.js",
       "types": "./dist/index.d.ts"
-    }
+    },
+    "./bin/qmd": "./bin/qmd",
+    "./package.json": "./package.json"
   },
   "bin": {
     "qmd": "bin/qmd"