Make ContribCard social messages configurable via config file

[caniszczyk]

It’s not configurable from a config file yet, but you can update it directly in the code for now:

contribcard/web/index.html

Line 11 in 0bd4135

<meta property="og:description" content="Happy #kuberTENes! Check out my #FirstContribution to Kubernetes https://contribcard.clotributor.dev" />

contribcard/web/src/layout/contributor/ShareContributorLink.tsx

Lines 95 to 96 in 0bd4135

	export const DESCRIPTION = `Happy #kuberTENes! Check out my #FirstContribution to Kubernetes`;
	export const HASHTAGS = ['kuberTENes', 'FirstContribution'];