Missing capital j descending-flat-hook variants

• The requested variant shape does not go too far away from Iosevka's design.
• The requested variant does not conflict with any characters in Unicode that Iosevka currently supports.
• For each variant you requested, there are at least two monospace/programming fonts created by different designers supported the requested variant. Provide images below.

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Hello everyone,

The following variants of capital-j descending-flat-hook currently do not exist:

• capital-j = 'descending-flat-hook-serifed-both-sides'
• capital-j = 'descending-flat-hook-serifed-symmetric'

Would it be possible to add them?