Having this in your ~/.bashrc will allow you to write persistent alias into ~/.bash_aliases with the aka command (and use them without sourcing ~/.bashrc)

.bashrc

# Alias definitions.
# You may want to put all your additions into a separate file like
# ~/.bash_aliases, instead of adding them here directly.
# See /usr/share/doc/bash-doc/examples in the bash-doc package.

if [ -f ~/.bash_aliases ]; then
    . ~/.bash_aliases
fi

# Write new alias to ~/.bash_aliases

aka()
{
  local alias_regex='[A-Za-z_0-9]*'
  if
    [[ $# = 1 && $1 =~ ($alias_regex)=(.*) ]]
  then
    printf "%s\n" "alias ${BASH_REMATCH[1]}=\"${BASH_REMATCH[2]}\"" >> ~/.bash_aliases
    . ~/.bash_aliases
  else
    echo "Usage: aka ALIAS_NAME=ALIAS_COMMAND"
    return 1
  fi
}

Example: aka moo="apt moo"