v2.1.9

Consider this version is for react19 users

The changes made by @talatkuyuk:

• Update npm scripts in package.json
• Remove tsconfig.json file from files in package.json
• Add declarationMap to tsconfig
• Add .tsbuildinfo to .npmignore
• Update github actions
• Add a missing sponsorship banner
• Add FUNDING.yaml for sponsorship
• Update eslint config using defineConfig instead of tseslint.config
• Update remark-mdx-remove-esm
• Update remark, recma, and eslint related devDependencies