refactor code and add fallback prompt to zsh

profiles/base/.zsh/conf.d/02-prompt.zsh

@@ -0,0 +1,19 @@
+if [[ -z ${TMUX} ]]; then
+    export REAL_TERM=${TERM}
+fi
+
+if [[ ${REAL_TERM} != "linux" ]]; then
+    # To customize prompt, run `p10k configure` or edit ~/.zsh/prompt/p10k.zsh.
+    . "${HOME}/.zsh/plugins/powerlevel10k/powerlevel10k.zsh-theme"
+
+    # Enable Powerlevel10k instant prompt. Should stay close to the top of ~/.zshrc.
+    # Initialization code that may require console input (password prompts, [y/n]
+    # confirmations, etc.) must go above this block; everything else may go below.
+    if [[ -r "${XDG_CACHE_HOME:-${HOME}/.cache}/p10k-instant-prompt-${(%):-%n}.zsh" ]]; then
+        . "${XDG_CACHE_HOME:-${HOME}/.cache}/p10k-instant-prompt-${(%):-%n}.zsh"
+    fi
+
+    [[ -f ${HOME}/.zsh/prompt/p10k.zsh ]] && . "${HOME}/.zsh/prompt/p10k.zsh"
+else
+    . "${HOME}/.zsh/prompt/fallback.zsh"
+fi