Support React 19

[RobinTail]

Fixes #7

Including general maintenance: upgrading all dependencies and adjusting some configs.
ATTW is also up to date and some adjustments made to the generated DTS files (now needs two of them, for each of the javascript bundles). This job was given to the Vite DTS plugin instead of tsc.
Configuration of extenals is updated to avoid bundling clipboard dependency which is supposed to be installed on consumer side. That reduced the bundle size significantly.

Tested manually:

• React 18 ✅
• React 19 ✅

[RobinTail]

Tested manually that the bundle works both with React 18 and 19.

[RobinTail]

by extenalizing the clipboard dependency in vite config.

[guipas]

Hey @RobinTail , thanks for the contribution!
Regarding this change, if I'm not mistaken, it means users will have to npm install clipboard in addition to installing our library ? Any reason why you are removing the dependency from the bundle ?

[RobinTail]

no, it will happen automatically, because clipboard is listed as the production dependency, @guipas
Therefore it does not have to be bundled, because it's installed along with your packaage.

[RobinTail]

react-clipboard-button/package.json

Lines 28 to 29 in 8e05720

	"dependencies": {
	"clipboard": "^2.0.8"

Listing in dependencies makes clipboard installed into node_modules on the consumer side along with this package. It's a subdependency accessible during the build on the consumer side. So you don't need to bundle clipboard into react-clipboard-button, @guipas

[RobinTail]

users will have to npm install clipboard in addition

That would only be necessary if listing a dependency within peerDependencies, where react is listed in, for example, @guipas
Peer dependencies are not installed automatically.

[guipas]

ok yeah that makes sense! thank you, I'll merge this PR

[guipas]

I'll publish on npm later this week

[RobinTail]

@guipas , please review