VScode: Fix first key extraction + Allow unsecure

- To prevent undefined value of extracted cbc key at first run the conf() object is refreshed at every access
- To allow playback behind corporate proxies the 'secure' flag was added

Fix Share All button only shared focused tracks

Handle vscode://yne.dzr/ + display artist picture

The following url shall now be handled by dzr
You can triger them from `xdg-open my-url`

    vscode://yne.dzr/pause
    vscode://yne.dzr/play
    vscode://yne.dzr/load # load next track
    vscode://yne.dzr/load?[0] # load track at [0]
    vscode://yne.dzr/add?[[76533108,76533118]] # add 2 track by id (used by  "copy link" menu)

vsix: can run in secure mode + better queue

vsix: run locally even when on remote

fix dzr-srt + use specific icon in vscode action-bar

Add MediaHandler

publish VSIX

move queue to side bar

Add VSCode extension

Working:
- API browsing
- bf-cbc key extraction
- track decryption
- track playback
- player state double-binding (playing/queue/position)

TODO:
- fetch streaming (currently all fetched)