Added Czech localization

[ioma8]

I have added support for czech language as well as correct translations for all keys in src/bin/edit/localization.rs . I am czech native and did the translations according to how standartly such applications are translated in my language. I also double checked the translations in the running program UI as well.

[ioma8]

@microsoft-github-policy-service agree

[jakubtalich]

I approve of this translation with this additional change:
"Match Case" --> "Velká/malá písmena" (to make it shorter for the TUI), or better just "Kapitalizace"

Just looking at how German and Spanish translations solved it:

       /* en      */ "Match Case",
        /* cs      */ "Rozlišovat velká a malá písmena",
        /* de      */ "Groß/Klein",
        /* es      */ "May/Min",

Thank you for such a superb translation! @ioma8