Add zsh/oh my zsh/w10k

zsh/.oh-my-zsh/plugins/themes/README.md

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+# Themes Plugin
+
+This plugin allows you to change ZSH theme on the go.
+
+To use it, add `themes` to the plugins array in your zshrc file:
+
+```
+plugins=(... themes)
+```
+
+## Usage
+
+`theme <theme_name>` - Changes the ZSH theme to specified theme.
+
+`theme ` - Changes the ZSH theme to some random theme.
+
+`lstheme ` - Lists installed ZSH themes.
+

zsh/.oh-my-zsh/plugins/themes/_theme

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+#compdef theme
+
+_arguments "1: :($(lstheme | tr "\n" " "))"

zsh/.oh-my-zsh/plugins/themes/themes.plugin.zsh

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+function theme
+{
+    if [ -z "$1" ] || [ "$1" = "random" ]; then
+	themes=($ZSH/themes/*zsh-theme)
+	N=${#themes[@]}
+	((N=(RANDOM%N)+1))
+	RANDOM_THEME=${themes[$N]}
+	source "$RANDOM_THEME"
+	echo "[oh-my-zsh] Random theme '$RANDOM_THEME' loaded..."
+    else
+	if [ -f "$ZSH_CUSTOM/themes/$1.zsh-theme" ]
+	then
+	    source "$ZSH_CUSTOM/themes/$1.zsh-theme"
+	else
+	    source "$ZSH/themes/$1.zsh-theme"
+	fi
+    fi
+}
+
+function lstheme
+{
+    # Resources:
+    # http://zsh.sourceforge.net/Doc/Release/Expansion.html#Modifiers
+    # http://zsh.sourceforge.net/Doc/Release/Expansion.html#Glob-Qualifiers
+    print -l {$ZSH,$ZSH_CUSTOM}/themes/*.zsh-theme(N:t:r)
+}