refactor: improve content loading

[leanmendoza]

• implement http requester with priority queue and only async
• replace content mapping Dictionary by Arc
• implement content provider in Rust
• gltf and texture loading working async
• wearables/avatar/backpack working async
• download video working
• refix auto animations gltfs
• temp remove video player test => events not working well

[codecov-commenter]

Codecov Report

Attention: 559 lines in your changes are missing coverage. Please review.

Comparison is base (b81bfba) 50.09% compared to head (f9ac81c) 46.30%.

Files	Patch %	Lines
...ntraland-godot-lib/src/content/content_provider.rs	69.88%	103 Missing ⚠️
rust/decentraland-godot-lib/src/content/gltf.rs	78.50%	72 Missing ⚠️
rust/decentraland-godot-lib/src/content/audio.rs	0.00%	69 Missing ⚠️
...t/decentraland-godot-lib/src/comms/signed_login.rs	0.00%	65 Missing ⚠️
rust/decentraland-godot-lib/src/content/video.rs	0.00%	35 Missing ⚠️
...and-godot-lib/src/http_request/request_response.rs	42.10%	22 Missing ⚠️
...-lib/src/http_request/rust_http_queue_requester.rs	77.52%	20 Missing ⚠️
...aland-godot-lib/src/content/content_notificator.rs	20.83%	19 Missing ⚠️
rust/decentraland-godot-lib/src/content/texture.rs	70.00%	18 Missing ⚠️
...traland-godot-lib/src/content/wearable_entities.rs	80.00%	17 Missing ⚠️
... and 20 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #132      +/-   ##
==========================================
- Coverage   50.09%   46.30%   -3.80%     
==========================================
  Files         124      136      +12     
  Lines       15359    16746    +1387     
==========================================
+ Hits         7694     7754      +60     
- Misses       7665     8992    +1327     

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