daca: update CLIENT_VERSION to 2.0.0, moving whole repo feels like a MAJOR change [ci skip]

Author: danmar

tools/donate_cpu_lib.py

@@ -16,7 +16,7 @@
 # Version scheme (MAJOR.MINOR.PATCH) should orientate on "Semantic Versioning" https://semver.org/
 # Every change in this script should result in increasing the version number accordingly (exceptions may be cosmetic
 # changes)
-CLIENT_VERSION = "1.3.70"
+CLIENT_VERSION = "2.0.0"
 
 # Timeout for analysis with Cppcheck in seconds
 CPPCHECK_TIMEOUT = 30 * 60