Add more collections of contribution opportunities

[OleksiyRudenko]

• https://github.com/szabgab/awesome-for-non-programmers
• https://devswag.io/
• https://firstcontributions.github.io/
• http://rfm.sospedra.me/#/
• https://github.com/org/prj/contribute || https://github.com/nodejs/node/contribute