[feature] add support to bypass using % wildcard

[ctf0]

basically a way to escape

query-filter/src/Searchable.php

Line 109 in b6c10c5

$keywords = $this->keyword->all();

so instead of always getting

where ((`rooms`.`number` like '1' or `rooms`.`number` like '1%' or `rooms`.`number` like '%1' or `rooms`.`number` like '%1%'))

we can only get

where ((`rooms`.`number` like '1'))

[crynobone]

https://github.com/laravie/query-filter#search-with-exact-wildcard

Added in v2.1.0