add callthis (#642)

* add callthis

* Update and rename callthis.yaml to callthis-shazow.yaml

---------

Co-authored-by: Carl Cervone <42869436+ccerv1@users.noreply.github.com>

data/projects/c/callthis-shazow.yaml

@@ -0,0 +1,9 @@
+version: 7
+name: callthis-shazow
+display_name: Callthis
+description: Callthis is a better transaction builder that works with any EVM contract, even if it's unverified.
+websites:
+  - url: https://callthis.link
+  - url: https://callthis.eth.link
+github:
+  - url: https://github.com/shazow/callthis