add projected necessary files

Author: APConduct

src/core.gleam

@@ -0,0 +1,3 @@
+pub type LispVal {
+  Atom(String)
+}

src/evaluator.gleam

@@ -1,5 +1,5 @@
 import gleam/io
 
-pub fn main() -> Nil {
+pub fn glisp_greet() -> Nil {
   io.println("Hello from glisp!")
 }

src/glisp.gleam

@@ -0,0 +1,5 @@
+import gleam/io
+
+pub fn main() -> Nil {
+  io.println("Hello from glisp!")
+}