Release v2.1.0

• 100% test coverage
• use deno task for tasks
• remove -c tsconfig option from deno cli calls ... again
• node/deno version in ci/cd
• copyright year
• support deno 2.x+
• support node 22
• add typescript hints for overrides
• catch(e) where e is now unknown previously any
• adds wrapper for error messages
• add member accessor for all classes
• fix #151 Allow the fromSerializationStrategy to handle null in place of a serializable object.
• test use the Deno.test function for shimmed tests with DNT
• add deno.json
• remove test_deps.ts and test_deps_test.ts
• add jsr:@std/assert
• add jsr:@std/cli
• add jsr:@deno/dnt