feat: allow custom nodes for comfyUI

[pixelass]

Motivation

Manages custom nodes for comfyUI

includes adjjustment to the unzip logic, by allowing flat folders (as required by comfyUI)

[codacy-production[bot]]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
:white_check_mark: +0.37% (target: -1.00%)	:white_check_mark: 100.00%

Coverage variation details

| | Coverable lines | Covered lines | Coverage | | ------------- | ------------- | ------------- | ------------- | | Common ancestor commit (932bc87f43e57ecb3ef6c9bcee858255591d9b26) | 2099 | 1965 | 93.62% | | | Head commit (27012aaa0f2022d0ad893d41b0c11215aefedf68) | 2130 (+31) | 2002 (+37) | 93.99% (**+0.37%**) | **Coverage variation** is the difference between the coverage for the head and common ancestor commits of the pull request branch: ` - `

Diff coverage details

| | Coverable lines | Covered lines | Diff coverage | | ------------- | ------------- | ------------- | ------------- | | Pull request (#302) | 42 | 42 | **100.00%** | **Diff coverage** is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: `/ * 100%`

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[TimPietrusky]

:tada: This PR is included in version 1.0.0-alpha.82 :tada:

The release is available on GitHub release

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