refactor: extract seed provision scripts to dedicated directory

Move bootstrap, default, and inform scripts from inline template
strings in lib/init.ts to standalone files under seed/, loaded via
an esbuild text-loader plugin. Add type-checking (provisions.d.ts,
tsconfig.json) and ESLint config for the seed scripts. Set tsconfig
module to Preserve to support import attributes.

seed/default.js

@@ -0,0 +1,40 @@
+const hourly = Date.now(3600000);
+
+// Refresh basic parameters hourly
+declare("InternetGatewayDevice.DeviceInfo.HardwareVersion", {
+  path: hourly,
+  value: hourly,
+});
+declare("InternetGatewayDevice.DeviceInfo.SoftwareVersion", {
+  path: hourly,
+  value: hourly,
+});
+declare(
+  "InternetGatewayDevice.WANDevice.*.WANConnectionDevice.*.WANIPConnection.*.MACAddress",
+  { path: hourly, value: hourly },
+);
+declare(
+  "InternetGatewayDevice.WANDevice.*.WANConnectionDevice.*.WANIPConnection.*.ExternalIPAddress",
+  { path: hourly, value: hourly },
+);
+declare("InternetGatewayDevice.LANDevice.*.WLANConfiguration.*.SSID", {
+  path: hourly,
+  value: hourly,
+});
+// Don't refresh password field periodically because CPEs always report blank passowrds for security reasons
+declare("InternetGatewayDevice.LANDevice.*.WLANConfiguration.*.KeyPassphrase", {
+  path: hourly,
+  value: 1,
+});
+declare("InternetGatewayDevice.LANDevice.*.Hosts.Host.*.HostName", {
+  path: hourly,
+  value: hourly,
+});
+declare("InternetGatewayDevice.LANDevice.*.Hosts.Host.*.IPAddress", {
+  path: hourly,
+  value: hourly,
+});
+declare("InternetGatewayDevice.LANDevice.*.Hosts.Host.*.MACAddress", {
+  path: hourly,
+  value: hourly,
+});