ESM path failure when importing a template

[thechucklingatom]

Hello, I am seeing an issue when importing a custom template on windows.

$ swagger-typescript-api -p http://localhost:5005/swagger/v1/swagger.json -o ./src -n api.ts --module-name-index 1 --custom-config custom-config.cjs -t ./templates
Error loading custom config Error [ERR_UNSUPPORTED_ESM_URL_SCHEME]: Only URLs with a scheme in: file, data, and node are supported by the default ESM loader. On Windows, absolute paths must be valid file:// URLs. Received protocol 'm:'
    at throwIfUnsupportedURLScheme (node:internal/modules/esm/load:239:11)
    at defaultLoad (node:internal/modules/esm/load:130:3)
    at ModuleLoader.load (node:internal/modules/esm/loader:403:13)
    at ModuleLoader.moduleProvider (node:internal/modules/esm/loader:285:56)
    at new ModuleJob (node:internal/modules/esm/module_job:67:26)
    at #createModuleJob (node:internal/modules/esm/loader:297:17)
    at ModuleLoader.getJobFromResolveResult (node:internal/modules/esm/loader:254:34)
    at ModuleLoader.getModuleJob (node:internal/modules/esm/loader:235:17)
    at async ModuleLoader.import (node:internal/modules/esm/loader:322:23) {
  code: 'ERR_UNSUPPORTED_ESM_URL_SCHEME'

in this case the external drive is named m: and what I believe is causing the problem. It does not know how to load the file correctly. When running the same command from my linux machine with the same structure everything runs successfully. I believe this import approach will resolve the issue. I am happy to make a PR for this fix if preferred.