Support more match options with search-input component

[cstechfoodie]

Feature requests

Feature request details

Currently, the search-input component only has one pipe function to match the prefix of string with input. However, this is not alway the case we want. We also need to have a pipe function to match the substring of a string with input, no matter what index the substring starts at. This helps much with filtering ids whose prefix are the same.

affected current version

Below are source code

https://github.com/SAP/fundamental-ngx/blob/develop/library/src/lib/search-input/search-input.component.ts

https://github.com/SAP/fundamental-ngx/blob/develop/library/src/lib/search-input/search-input.component.html

Is there anything else we should know?

It is nice to provide multiple pipe options and let user to chose which pipe function to use.

[cstechfoodie]

And maybe an option to disable the DropdownValues to be added