Rule Proposal: Analog for `strict-boolean-expressions` typescript-eslint rule

[basil-gor]

Please describe what the rule should do:

There are very useful rule strict-boolean-expressions in typescript-eslint.
If there are no possible ways to use it in vue templates, maybe we can implement a vue analog for this rule?

What category should the rule belong to?

[x] Enforces code style (layout)
[ ] Warns about a potential error (problem)
[ ] Suggests an alternate way of doing something (suggestion)
[ ] Other (please specify:)

Provide 2-3 code examples that this rule should warn about:

Just for example for string expression:

// Will be incorrect ❌
<div
  v-if="someEmptyString"
/>

// Will be correct ✅
<div
   v-if="someEmptyString !== ''"
/>

Additional context

[juliusfriedman]

Have been wondering if the fact @typescript-eslint/strict-boolean-expressions is only working inside <script> tags and not templates is a bug.

It comes as a surprise to me that v-if parsing and if parsing are not handled the same, I would think they are the same syntax nodes in AST and that this rule would work out of the box.

[waynzh]

if the fact @typescript-eslint/strict-boolean-expressions is only working inside <script> tags

Exactly. Since the Node types in the <template> are different, similar functionality needs to be implemented to make it work.