Add zshrc and refactor shell configration

.bashrc

@@ -147,6 +147,10 @@ fi
 
 # Customizations
 
+if [ -f ~/.profile ]; then
+  . ~/.profile
+fi
+
 # Use tmux for local unelevated shells
 if [ -z "${SUDO_USER}" ] && [ -z "${SSH_CONNECTION}" ] && [ -z "${TERM_PROGRAM}" ]; then
   tmux new -A -s local_tmux
@@ -161,15 +165,10 @@ if [ $(which nvim) ]; then
 fi
 
 # Kubernetes
-alias k9=k9s
 which kubectl 1> /dev/null && source <(kubectl completion bash)
 which helm 1> /dev/null && source <(helm completion bash)
-[ -d "${KREW_ROOT:-$HOME/.krew}/bin" ] && export PATH="${KREW_ROOT:-$HOME/.krew}/bin:$PATH"
 
 # Helpful Aliases
-alias rsync="rsync -e 'ssh -o RemoteCommand=none'"
-alias sudosu="sudo bash --rcfile ~/.bashrc"
-
 if [ -n "${SUDO_USER}" ]; then
   alias nano="nano --rcfile \"/home/${SUDO_USER}/.nanorc\""
 fi
@@ -178,12 +177,6 @@ fi
 shopt -s histverify
 PROMPT_COMMAND="${PROMPT_COMMAND};history -a"
 
-# Cargo binary path
-[ -d "${HOME}/.cargo/bin" ] && export PATH="${PATH}:${HOME}/.cargo/bin"
-
-# Funciton to notify after a long-running command
-alias bell="echo -e '\a'"
-
 # Apply local .bashrc to remote ssh session
 ssh-custom() {
   remote_file=$(mktemp)