[ADD][SHELL] Project-local environment w/ localrc

This little script will look at your current working directory and its
parent directories to source local configuration files (very useful for
Python  projects, or the way I build TC with a local PATH pre-pended).

It works relatively well but still is a very fragile solution that
depends on the order in which the shell has sourced its files. Because
the Termite script kept erasing the previous PROMPT_COMMAND value for
Bash I had to change to source it at the beginning of my configuration
file.

shell/.profile

@@ -48,4 +48,7 @@ if { [ -n "$BASH_VERSION" ] && shopt -q login_shell; } ||
 fi
 
 # Use keychain to handle ssh-agent, in interactive shell too
-eval "$(keychain --eval id_rsa --quiet)"
+eval "$(keychain --eval id_rsa --eval id_ed25519 --quiet)"
+
+# Use my localrc script to automatically source/unsource local configurations
+source ~/.scripts/localrc