[ocis] Use KQL for existing search syntax

[exalate-issue-sync]

Description

User Stories

• As an admin I want a standard syntax for search so that I don't need to learn a new syntax if the search engine changes.

Value

• ease of use for adavanced search syntax usage
• lower efforts to change the search engine
• lower efforts to integrate search in different clients

Acceptance Criteria

• Users can search by using th following subset of the KQL Syntax (https://learn.microsoft.com/en-us/sharepoint/dev/general-development/keyword-query-language-kql-syntax-reference)
• Name is available via KQL
• Tag is available via KQL
• Content is available via KQL
• Conjunctive normal form (you can set "brackets" and use logic operators)

Notes:

• Query Language (Keyword QL): https://learn.microsoft.com/en-us/sharepoint/dev/general-development/keyword-query-language-kql-syntax-reference

• API: https://docs.oasis-open.org/odata/odata/v4.01/odata-v4.01-part1-protocol.html#sec_BuiltinFilterOperations

• Shortcuts like :presentation :1w have precedence ([feature/new-search] New search experience for version 12 ios-app#1142 )

Definition of ready

[ ] everybody needs to understand the value written in the user story
[ ] acceptance criteria has to be defined
[ ] all dependencies of the user story need to be identified
[ ] feature should be seen from an end user perspective
[ ] user story has to be estimated
[ ] story points need to be less then 20

Definition of done

• Functional requirements
  [ ] functionality described in the user story works
  [ ] acceptance criteria are fulfilled
• Quality
  [ ] code review happened
  [ ] CI is green
  [ ] critical code received unit tests by the developer
  [ ] automated tests passed (if automated tests are not available, this test needs to be created and passed
• Non-functional requirements
  [ ] no sonar cloud issues

[exalate-issue-sync]

Felix Schwarz commented: As a point of reference, the supported syntax for the iOS client v12 is detailed in this PR's description: owncloud/ios-app#1142

[exalate-issue-sync]

Tobias Baader commented: Note: estimation is done via [~fschade] might need to be refined if this is done by someone else.

[exalate-issue-sync]

Florian Schade commented: [~tbaader]i'm not a fan of micing kql and our ios terms! Lets discuss that on monday,
PR handed over to [~rperekhod] for the ast to bleve compiler!