chore: first template adjustments

This is an initial take on adjusting the foundry-template to the Vac's
smart contract unit's needs. In a nutshell what this does is:

1. Update README to not refer to upstream repo where not necessary
2. Removes PRBergTest library from dependencies
3. Removes `FUNDING.qml`
4. Adjust CI actions

There are more things to be done and decided on in follow-up commits.

package.json

@@ -1,10 +1,10 @@
 {
-  "name": "@prb/foundry-template",
-  "description": "Foundry-based template for developing Solidity smart contracts",
+  "name": "@vacp2p/foundry-template",
+  "description": "Foundry-based template for developing Solidity smart contracts used by Vac",
   "version": "1.0.0",
   "author": {
-    "name": "Paul Razvan Berg",
-    "url": "https://github.com/PaulRBerg"
+    "name": "0x-r4bbit",
+    "url": "https://github.com/vacp2p"
   },
   "devDependencies": {
     "prettier": "^3.0.0",