Add support for lazy text inputs

[Benjamin-Lee]

Right now, there's no way to prevent modeled variables from being changed immediately. Bootstrap-Vue solves this with a lazy prop, btw.

[alfonsobries]

definitely @Benjamin-Lee

ill add this to my to-do list

[alfonsobries]

Ill add this on the vue3 version #214

[tobiasdiez]

Instead of using a lazy prop as bootstrap-vue does, I would propose to support the v-model.lazy modifier https://vuejs.org/v2/guide/forms.html#lazy (if this is possible). In the past this was hard to implement, but maybe got easier with vue3? See vuejs/vue#5743