Make notifications clickable

⭐️ Additions:

• notifications are now clickable and open default browser with the particular build
• a new menu item (relaunch and install) will be added to the menu after a new release was detected

🐛 Bug fixes:

• builds with state error now count to finished builds

🗑 Removals:

• the setting for build count was removed (I think it always makes sense)

🤷🏻‍♂️🤷🏻‍♀️ Misc:

• more test coverage and refactorings

---------------|----------|----------|----------|----------|-------------------|
File           |  % Stmts | % Branch |  % Funcs |  % Lines | Uncovered Line #s |
---------------|----------|----------|----------|----------|-------------------|
All files      |    35.04 |    38.96 |     35.8 |    34.41 |                   |
 config.ts     |        0 |      100 |      100 |        0 |                 1 |
 connection.ts |        0 |        0 |        0 |        0 |... 17,30,31,32,37 |
 icons.ts      |        0 |      100 |        0 |        0 |           1,3,4,6 |
 index.ts      |        0 |        0 |        0 |        0 |... 76,78,79,83,84 |
 menubar.ts    |        0 |        0 |        0 |        0 |... 87,391,393,394 |
 menus.ts      |       80 |       50 |    66.67 |       80 |          25,54,75 |
 netlify.ts    |    97.92 |    88.89 |      100 |    97.83 |                90 |
 util.ts       |    96.77 |    90.91 |      100 |    96.55 |                39 |
---------------|----------|----------|----------|----------|-------------------|