Add MoE parameters to ModelOpt pruning example + conf fixes

[kevalmorabia97]

What does this PR do ?

• ModelOpt Pruning example update: enable MoE parameters, ability to reuse pruning scores for pruning to different configs, print pruned model params, update readme support matrix
• Change conf/qwen to conf/Qwen while maintaining symlink conf/qwen for bw compatibility
• Add conf/NVIDIA-Nemotron-Nano-9B-v2-Base.sh symlink to conf/NVIDIA-Nemotron-Nano-9B-v2.sh

⚠️ For major changes (either in lines of code or in its impact), please make sure to first share discuss a design-doc with the team.

Contribution process

flowchart LR
    A[Pre-checks] --> B[PR Tests]
    subgraph Code Review/Approval
        C1[Expert Review] --> C2[Final Review]
    end
    B --> C1
    C2 --> D[Merge]

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Pre-checks

• I want this PR in a versioned release and have added the appropriate Milestone (e.g., Core 0.8)
• I have added relevant unit tests
• I have added relevant functional tests
• I have added proper typing to my code Typing guidelines
• I have added relevant documentation
• I have run the autoformatter.sh on my PR

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Final Review might get declined if these requirements are not fulfilled.

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(Optional Step 4): Cherry-pick into release branch

If this PR also needs to be merged into core_r* release branches, after this PR has been merged, select Cherry-pick to open a new PR into the release branch.

For MRs into `dev` branch

The proposed review process for `dev` branch is under active discussion.

MRs are mergable after one approval by either eharper@nvidia.com or zijiey@nvidia.com.

Merging your PR

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