Missing translations for keyword search input

Since #1169 is merged, some already translated languages is missing this key.
The goal of this issue is to track the existing languages that has this key missing to hopefully attract some PR's to patch this.

The file in question: [src/views/KeywordList.vue](https://github.com/alfg/opendrinks/blob/master/src/views/KeywordList.vue)
Key missing translation: `Enter your keyword`.

Please reference this issue in your PR's so I can update the list below.

## FAQ

How do I translate?
Inside the i18n element in the code, create a new object with your lang code as a key and an object with trans keys as a value.
Test to see if it works by running the page locally in a browser that has the language in question as default lang / navigator.language.

How do I reference to this issue?
Simply add "#1178" somewhere in a comment or the PR description.

## Translation progress
- [ ] ja
- [ ] fr
- [x] es - contributed by @OscarRG #1184
- [x] hi - contributed by @theishanbh #1179
- [ ] gl
- [x] de - contributed by @OscarRG #1183
- [ ] nl
- [x] no - contributed by me #1169
- [x] ru - contributed by @KamaZz #1180
- [x] uk - contributed by @KamaZz #1180
- [x] bn - contributed by @appledora #1181