200 line symbol table implementation and the first commit

Setup build system (POSIX sh), gitignore, basic C file with an
implementation of something I really wanted to setup.

It just hashes a snippet of lorem ipsum.  Testing seems to indicate
it's working. That's all it does lol.

This is a really pressing matter; all my previous Lisps always just
made the strings on the fly and that irked me deeply.  I want a smart
implementation that really tries to save memory on something as
intensive as symbols.

build.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env sh
+
+CFLAGS="-Wall -Wextra -std=c11 -ggdb"
+SRC="main.c"
+OUT="main.out"
+
+set -xe
+
+cc $CFLAGS -o $OUT $SRC;