[Feature]: JankariTech slide template

[koebel]

Description

Implement design template similar to presentation-template.odp as an example for #10

User Stories

As a JankariTech user
I want to create slides that align with the JankariTech corporate design
So that I can ensure a consistent look and feel of all the company presentations

Acceptance Criteria

• standard colours and fonts of this template comply with JankariTech corporate design
• includes a title slide with the create skills, software, jobs visual
• includes a content slide with the green mountain visual in the background
• includes a contact slide with company contacts (website, social media)