Add TypeScript build config for .d.ts declaration output

Set up tsconfig.json (declaration: true, DOM lib), package.json with
main/types/files pointing at dist, and .gitignore for node_modules/dist
so the library can be consumed with type declarations.

.gitignore

@@ -0,0 +1,2 @@
+node_modules
+dist

package-lock.json

@@ -0,0 +1,29 @@
+{
+  "name": "abstract-ts-table",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "abstract-ts-table",
+      "version": "1.0.0",
+      "license": "MIT",
+      "devDependencies": {
+        "typescript": "^6.0.3"
+      }
+    },
+    "node_modules/typescript": {
+      "version": "6.0.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-6.0.3.tgz",
+      "integrity": "sha512-y2TvuxSZPDyQakkFRPZHKFm+KKVqIisdg9/CZwm9ftvKXLP8NRWj38/ODjNbr43SsoXqNuAisEf1GdCxqWcdBw==",
+      "dev": true,
+      "bin": {
+        "tsc": "bin/tsc",
+        "tsserver": "bin/tsserver"
+      },
+      "engines": {
+        "node": ">=14.17"
+      }
+    }
+  }
+}

package.json

@@ -0,0 +1,22 @@
+{
+  "name": "abstract-ts-table",
+  "version": "1.0.0",
+  "description": "A utility class for creating HTML tables.",
+  "type": "module",
+  "main": "dist/abstract-table.js",
+  "types": "dist/abstract-table.d.ts",
+  "files": ["dist"],
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "build": "tsc"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://git.centremetre.com/CentreMetre/abstract-ts-table"
+  },
+  "author": "CentreMetre",
+  "license": "MIT",
+  "devDependencies": {
+    "typescript": "^6.0.3"
+  }
+}

tsconfig.json

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+{
+  "compilerOptions": {
+    "target": "ES2020",
+    "module": "ESNext",
+    "moduleResolution": "Bundler",
+    "lib": ["ES2020", "DOM"],
+    "declaration": true,
+    "outDir": "dist",
+    "strict": true
+  },
+  "include": ["abstract-table.ts"]
+}