chore: migrate to c8

Author: alexander-akait

.c8rc.json

@@ -0,0 +1,8 @@
+{
+  "all": true,
+  "clean": false,
+  "root": ".",
+  "include": ["packages/*/src/**/*.ts"],
+  "reporter": ["text", "html", "lcov"],
+  "exclude-after-remap": true
+}

.nycrc

@@ -1,5 +1,7 @@
 module.exports = {
   testEnvironment: "node",
+  coverageProvider: "v8",
+  collectCoverage: false,
   collectCoverageFrom: ["packages/*/src/**/*.ts"],
   coverageDirectory: ".jest_coverage",
   coverageReporters: ["json"],