Add keymaps for muralis and kuru (#17337)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Sree Vidya Sobha Dharmarajan <ssd@Srees-MacBook-Pro.local>

keyboards/dztech/dz60rgb_ansi/keymaps/muralisc/readme.md

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+### ansi vim
+
+Keymap for dz60rgb terminal users
+
+### Philosophy
+
+Touch typing largely relies on muscle memory and hence
+maintaining a uniform position of keys across devices helps a lot.
+
+The below keymap attempts to maintain a uniform keymap across Linux and Mac.
+
+Avoiding the use of `KC_GESC` as the intention is to use the same layer for mac and linux.
+`KC_GESC` causes `` CMD+` `` to be send which has a default mapping
+
+Layer: 1
+
+Using `A` for `Home`
+Using `E` for `End`
+Using `F` for `PgDN`
+Using `B` for `PgUP`
+
+Layer 3:
+
+Dedicated Num keys block and `Ins, Home, PgUp` block.
+
+Dedicated Layer for arrow keys and Num keys and `Ins`, `Home` and `PgUp`.