#42 Add suppor for client-side search (#227)

* Add support for client-side search with Fuse.js. Implements #42.

Based on https://gist.github.com/eddiewebb/735feb48f50f0ddd65ae5606a1cb41ae

* Move search form code repeated in many places to one single template.

* Add search box in home page.

* Fix search UI + Some improvements

Signed-off-by: hossainemruz <hossainemruz@gmail.com>

* Remove search.md from exampleSite

Signed-off-by: hossainemruz <hossainemruz@gmail.com>

Co-authored-by: Emruz Hossain <hossainemruz@gmail.com>

layouts/_default/index.json

@@ -0,0 +1,5 @@
+{{- $.Scratch.Add "index" slice -}}
+{{- range .Site.RegularPages -}}
+    {{- $.Scratch.Add "index" (dict "title" .Title "hero" (partial "helpers/get-hero.html" .) "date" (.Date.Format "January 2, 2006") "summary" .Summary "tags" .Params.tags "categories" .Params.categories "contents" .Plain "permalink" .Permalink) -}}
+{{- end -}}
+{{- $.Scratch.Get "index" | jsonify -}}