Add Krea 2 LoRA block support

[diodiogod]

Adds Krea 2 support to the LoRA analysis and selective loading nodes.

What this adds:

• Krea 2 detection in the V1 and V2 LoRA analyzers
• Selective LoRA Loader (Krea 2)
• Krea 2 Analyzer + Selective Loader V2
• 28 main SingleStreamBlock controls: block_0 through block_27
• frontend preset/widget support for the new Krea 2 nodes

Implementation notes:

• Non-main Krea 2 Linear layers such as txtfusion, tmlp, txtmlp, tproj, first, and last are grouped under other_weights.
• This is for Krea 2 LoRA analysis/loading only; it does not add Krea 2 training support.
• The block layout follows the current Musubi Krea 2 implementation, where Krea 2 has 28 main SingleStreamBlocks.

Caveats:

• This may still have bugs. Krea 2 support is new and I only tested it with the LoRAs/workflows I have available.
• The analyzer color/impact detection may need refinement, especially around how much weight should be attributed to other_weights versus the 28 main blocks.
• In my testing, the Krea 2 selective loader itself appears to work well for block manipulation.

Tested:

• Python compile check for the touched Python files
• frontend JS syntax check
• smoke tests for Krea 2 detection and block extraction
• manual Krea 2 LoRA loading/block manipulation in ComfyUI

[diodiogod]

Compatibility note for #56 / #57: when both branches are combined, connected Krea 2 block_weights_string values are ignored because Krea 2 is missing from the shared Python profile parser. The node falls back to its local slider values.

Tested fix: register the 28 Krea blocks, accept 28-value profiles or 29 values including other_weights, support named syntax, and include other_weights in the output. Verified with a connected runtime string on both Krea nodes.

Fix is preserved in diodiogod:personal/krea2-v1-save at commit 396970d. It should be applied when whichever PR merges second is rebased.