Add publish config

Specify publish configs.

package.json

@@ -4,6 +4,25 @@
   "types": "dist/types/index.d.ts",
   "main": "dist/cjs/production/index.js",
   "module": "dist/esm/production/index.js",
+  "publishing": {
+    "github": {
+      "repository": "https://github.com/TheoryOfNekomata/uuid-buffer.git",
+      "publishConfig": {
+        "registry": "https://npm.pkg.github.com"
+      }
+    },
+    "master": {
+      "repository": "https://code.modal.sh/TheoryOfNekomata/uuid-buffer.git",
+      "publishConfig": {
+        "registry": "https://js.pack.modal.sh"
+      }
+    },
+    "npm": {
+      "publishConfig": {
+        "registry": "https://registry.npmjs.com"
+      }
+    }
+  },
   "exports": {
     ".": {
       "development": {

publish.sh

@@ -0,0 +1,22 @@
+defaultBranch=master
+
+for branch in $(cat package.json | jq .publishing | jq -r keys[]) ; do
+  echo "Selected configuration: $branch"
+
+  rawRepository=$(cat package.json | jq -r .publishing.$branch.repository)
+  repository=$(cat package.json | jq -r .publishing.$branch.repository)
+  defaultRepository=$(cat package.json | jq -r .publishing.$defaultBranch.repository)
+
+  if [ $repository = $defaultRepository ]; then
+    echo "Changing to default repository: $repository"
+    echo "$( jq --arg repository "$repository" '.repository = $repository' package.json )" > package.json
+  elif [ $rawRepository != 'null' ]; then
+    echo "Changing to mirror repository: $repository"
+    echo "$( jq --arg repository "$repository" '.repository = $repository' package.json )" > package.json
+  fi
+
+  registry=$(cat package.json | jq -r .publishing.$branch.publishConfig.registry)
+  echo "Publishing to package repository: $registry"
+  npm publish --registry=$registry --access public
+  git reset --hard
+done