Add a filter to the general search results interface

Purpose: Add a filter to the general search results interface for switching between different types of search results

Changes: Added four buttons (All, Workflow, Project, and Dataset) to the search results interface.

Demo: old general search interface:

new general search interface:

new general search interface - project: new general search-project

new general search interface - workflow: new general search-workflow

new general search interface - dataset: new general search-dataset

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