refactor core attestation logic (#73)

Signed-off-by: Brian DeHamer <[email protected]>

__tests__/style.test.ts

@@ -0,0 +1,15 @@
+import { highlight, mute } from '../src/style'
+
+describe('style', () => {
+  describe('highlight', () => {
+    it('adds cyan color to the string', () => {
+      expect(highlight('foo')).toBe('\x1B[36mfoo\x1B[39m')
+    })
+  })
+
+  describe('mute', () => {
+    it('adds gray color to the string', () => {
+      expect(mute('foo')).toBe('\x1B[38;5;244mfoo\x1B[39m')
+    })
+  })
+})