[Feature] Pivorak's speakers page

[skrix]

Description:

• As a user, I want to open pivorak site talks page and see the speakers button
• After I click on the speaker list link I redirected to the beautiful Pivorak Speakers index page with search input and list of speakers
• Through the search input, I should be able to find a speaker by name
• In the list, I should see a speaker's name, count of talks, social profile if he provides it and link to the speaker profile page(currently it can be dummy link)