Separate components better and remove audio_board dependencies

[luar123]

This PR removes dependencies from components and within main.c to allow easier re-use.

• remove the audio_board dependency from player.c by supplying the i2s_pin_config through player_init
• For setting DAC mute and volume, player and http_get tasks are both updating audioDAC_data (guarded by a semaphore). And on each update it is send to the main task which will handle the actual DAC control.
• With this, app_main does not need any global variable anymore and all the tasks and supporting functions could be moved to a component.
• add dependencies.lock to .gitignore as this file is auto-generated.

Draft state, because I need to run more tests.

[CarlosDerSeher]

What's the reason for the _ ? Couldn't you just drop this and use rhe parameter as a variable directly?

[luar123]

I need to assign these paramters (coming from app_main) to the global variables pin_config0 and i2sNum. Of course I can use a different name instead of the trailing underscore.

[luar123]

Thanks for the feedback. Sorry, I mixed different code style conventions.
There is also a bug with the queue, need to use overwrite instead of send, will fix that soon.

Should I also move everything from app_main to lightsnapcast component or a new component? Or better leave that for later?

[CarlosDerSeher]

I've always wanted to seperate decoder part to a own module too. But this I will do when I find a solution to the 20ms bug (#54). I am on this, so it would be easier for me not to change too much currently because this will make it hard to merge later.

[luar123]

Yes, sure.
With this last commit this PR is ready. All included sdkconfigs compile and I tested it on my setup with pcm5102a.