Added Mercury and Updated Thorium

[joseyskindaweird]

Added the Mercury Browser Updated Thorium to M120.0.6099.235

Added Mercury, A Firefox fork. I also updated Thorium to version M120.0.6099.235, since the existing one was outdated.

Closes #XXXX

Relates to #XXXX

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thorium-avx2

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mercury-avx2

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mercury-sse3

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thorium-avx2

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thorium-sse3

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mercury-avx2

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mercury-sse3

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thorium-avx2

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thorium-sse3

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[aliesbelik]

Duplicates #12758, #12132, #12080. PR for AVX2 version raised in Versions bucket as ScoopInstaller/Versions#1438.