Extract presence module and add SVG status icons

Move quick status buttons into dedicated presence.ts/css module with
Font Awesome SVG icons (briefcase, headphones, grill, beer mug,
screen-users). Bump version to 9.5.0.

client/package.json

@@ -1,7 +1,7 @@
 {
   "name": "3cx-tapi",
   "description": "3CX CP Tapi and Projectmanager integration",
-  "version": "9.4.0",
+  "version": "9.5.0",
   "author": {
     "name": "Daniel Triendl",
     "email": "d.triendl@cp-solutions.at"