Add Files-Search option: "Current folder"

[exalate-issue-sync]

As a user i want to scope the files-search to my current folder, to easily spot the file I'm looking for in the current folder.

Acceptance Criteria

• applies to oc10 + ocis
• default: search scope is global (if available)
• Option to select the current folder (without sub-folders) as search-scope. to be strict: this is filtering ;-)
• happens client-side
• when searchfield is not empty: show 2 options below search bar

1. All files (serverside, not avialable on ocis)
2. Current folder (client side / filter)

check github as an example

• keyboard arrows up / down to select search scope
• keyboard enter for firing the search/filter
  clicking option with mouse also fires the search/filter (check github for an expierience axample)
• unit test in ODS
• search bar component in ods: remove search button
• placeholder text: "Search files and folders"
• use oc-tag component for dropdown-option labeling (cf github)
• use fuzzy search "fusejs.io"
• current sorting is respected (only limit the set of activeFiles displayed in the current view)
• pagination stays untouched

[exalate-issue-sync]

Florian Schade commented: Ideas for later:

• lexer: [feature/localsearch] Local account-wide search using custom queries ios-app#933
• fileCount and result info for previews

[exalate-issue-sync]

Pascal Wengerter commented: [~tbaader] added a screenshot of GitLab's search UI for inspiration when it comes to our search page in the web UI sometime soon!

[exalate-issue-sync]

Tobias Baader commented: Also Ideas for later:
Box search is imo quite well done:

• option to open parent folder
• shows last modified