Fix(WebDav): add dynamic import helper to support ESM in CJS context …

[CapoMK25]

Brief description

When running npm run start:dev I ran into this issue:

`[8:35:17 PM] Starting compilation in watch mode...

[8:35:26 PM] Found 0 errors. Watching for file changes.

[dotenv@17.2.2] injecting env (0) from .env -- tip: ⚙️  specify custom .env file path with { path: '/custom/path/.env' }
C:\Users\Matias.DESKTOP-2SBTD6B\Desktop\Altzone-Server\dist\gameAnalytics\logFile.service.js:19
const webdav_1 = require("webdav");
                 ^

Error [ERR_REQUIRE_ESM]: require() of ES Module C:\Users\Matias.DESKTOP-2SBTD6B\Desktop\Altzone-Server\node_modules\webdav\dist\node\index.js from C:\Users\Matias.DESKTOP-2SBTD6B\Desktop\Altzone-Server\dist\gameAnalytics\logFile.service.js not supported.
Instead change the require of index.js in C:\Users\Matias.DESKTOP-2SBTD6B\Desktop\Altzone-Server\dist\gameAnalytics\logFile.service.js to a dynamic import() which is available in all CommonJS modules.
    at Object.<anonymous> (C:\Users\Matias.DESKTOP-2SBTD6B\Desktop\Altzone-Server\dist\gameAnalytics\logFile.service.js:19:18) {
  code: 'ERR_REQUIRE_ESM'
}

Node.js v20.11.0

Turns out the project doesn't work out of the gate and required extensive tweaking to the source code to bypass this ESM vs CommonJS mismatch. This fixes said compatibility issue so that the issue doesn't repeat for anybody else. Otherwise this is a critical blocker for anyone just cloning the repo and following the README instructions.

Change list

• Added a helper utility to dynamically import ESM modules (createWebDavClient.ts)
• Updated logFile.service.ts to use the new helper
• TSConfig was adjusted (module: es2020) to allow import.meta.url usage safely

Why this matters

Without this fix, the app throws ERR_REQUIRE_ESM when importing webdav using require() in compiled output as we can see in the output.

• Closes Fix ESM compatibility for 'webdav' package in CommonJS context #751