Add a list of runs from all projects and repos in UI

[peterschmidt85]

Currently, it's only possible to see runs if you open a particular project and then a specific repo.
As a user, I want to be always able to see all my runs (across multiple projects and repos).
Here's what is suggested:

1. Add the Runs page to UI and show it by default
2. This page should show runs from all projects and repos.
3. This page should allow to filter run by a project/repo. By default, no filters are set.
4. This page should provide a toggle filter "Active runs". If enabled, the page should show only unfinished runs. It should be auto-enabled if there is at least one unfinished run.
5. It should be possible to open and run.

@olgenn Please see what changes you need from the API side, and let @r4victor know.

[olgenn]

@r4victor, we need to add api method similar /api/project/{project_name}/runs/list, but it have to return Runs for all projects. For example /api/runs/list

[olgenn]

@r4victor we need to api method for running run. For example /api/project/{project_name}/runs/run