feat: add sdk7 to sdk6 adaption layer

[kuruk-mm]

When an SDK6 Scene is detected, we load the SDK7 Adaption Layer.

The SDK7 Adaption Layer internally reads the scene.json and evaluates the main script from the SDK6 scene.

[codecov-commenter]

Codecov Report

Patch coverage has no change and project coverage change: -0.26% ⚠️

Comparison is base (1b4a98b) 19.84% compared to head (b552990) 19.58%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #36      +/-   ##
==========================================
- Coverage   19.84%   19.58%   -0.26%     
==========================================
  Files          56       57       +1     
  Lines        6582     6668      +86     
==========================================
  Hits         1306     1306              
- Misses       5276     5362      +86     

Files Changed	Coverage Δ
...st/decentraland-godot-lib/src/dcl/js/js_runtime.rs	0.00% <0.00%> (ø)
rust/decentraland-godot-lib/src/dcl/js/mod.rs	0.00% <0.00%> (ø)
...t/decentraland-godot-lib/src/dcl/js/runtime_mod.rs	0.00% <0.00%> (ø)
rust/decentraland-godot-lib/src/dcl/mod.rs	34.48% <0.00%> (-2.56%)	⬇️
...raland-godot-lib/src/scene_runner/scene_manager.rs	0.42% <0.00%> (-0.02%)	⬇️

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