Adding Multilingual, Code-Switched, and Hybrid ASR models

[KunalDhawan]

What does this PR do ?

This PR:

1. Adds the multilingual models (stt_multilingual_fastconformer_hybrid_large_pc, stt_multilingual_fastconformer_hybrid_large_pc_blend_eu) to the pre-trained models catalog and ASR docs
2. Adds the FastConformer Hybrid FR, RU ASR models (stt_ru_fastconformer_hybrid_large_pc, stt_fr_fastconformer_hybrid_large_pc) to the pre-trained models catalog and ASR docs
3. Adds the code-switching models (stt_enes_conformer_transducer_large_codesw, stt_enes_conformer_ctc_large_codesw) to the ASR docs
4. Updates the versions of the FastConformer Hybrid ASR models (EN, ES, IT, DE, PL, BY, HR, UA)

Collection: ASR

Changelog

• Added the FC Hybrid models to nemo/collections/asr/models/hybrid_rnnt_ctc_bpe_models.py
• Updated the ASR docs at NeMo/docs/source/asr/results.rst
• Created new results tables for Multilingual (NeMo/docs/source/asr/data/benchmark_multilingual.csv), Code Switching(NeMo/docs/source/asr/data/benchmark_code_switching.csv)

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PR Type:

• New Feature
• Bugfix
• Documentation

[nithinraok]

LGTM