Backport HTTPS and user authentication from TinyPilot Pro (#1912)

Resolves tiny-pilot/tinypilot-pro#1547

This PR adds support for HTTPS (on by default) and basic user
authentication to TinyPilot Community.

Demo video:



https://github.com/user-attachments/assets/dad9a6c8-3468-444b-9d8b-fd15087394d5



Notes:
1. There's a lot of code in this PR, but it's mostly just copy/pasted
from the TinyPilot Pro repo.
2. The only changes that will be merged it into the Pro repo (via our
[`merge-pro` GitHub
action](https://github.com/tiny-pilot/tinypilot/blob/2175dff3a74609d99005858bfb8508bf156ad01f/.github/workflows/merge-pro.yml))
are the changes to:
    - `docs/user-configurable-settings.md`
-
[`app/templates/custom-elements/manage-users-form.html`](https://github.com/tiny-pilot/tinypilot/blob/72d146a94dcb2bf59e5e04f5b5dc288088d90655/app/templates/custom-elements/manage-users-form.html#L22)
3. Internally, user authentication has full support for multiple user
roles. However, the frontend has been limited to a single user role
(i.e., Administrator).
- Parts of the API, Web UI, and e2e tests that support additional user
roles has been redacted.

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Author: jdeanwallace

.eslintrc.cjs

@@ -40,5 +40,10 @@ module.exports = {
     "one-var-declaration-per-line": "error",
     "prefer-const": "error",
   },
-  ignorePatterns: ["app/static/third-party", "playwright-report", "venv"],
+  ignorePatterns: [
+    "app/static/third-party",
+    "app/templates/components/debug-mode.html",
+    "playwright-report",
+    "venv",
+  ],
 };