INTER-2051: Add SDK version support and EOL table to README

[kevinmia]

This PR addresses concerns raised in INTER-2051. This is part of a thread of PRs that adds this table to the SDK README.

Adds a "Version support" section to the README with a single table showing which SDK major versions map to which JS Agent version, their current status, and end-of-support info.

[github-actions]

⚠️ This PR doesn't contain any changesets. If there are user-facing changes, don't forget to run:

pnpm exec changeset

to create a changeset.

[github-actions]

Coverage report

St.❔	Category	Percentage	Covered / Total
🟢	Statements	100%	40/40
🟢	Branches	100%	5/5
🟢	Functions	100%	6/6
🟢	Lines	100%	37/37

Test suite run success

14 tests passing in 5 suites.

Report generated by 🧪jest coverage report action from 1c772e1

Show full coverage report

St	File	% Stmts	% Branch	% Funcs	% Lines	Uncovered Line #s
🟢	All files	100	100	100	100
🟢	src	100	100	100	100
🟢	public-api.ts	100	100	100	100
🟢	src/lib	100	100	100	100
🟢	fingerprint.module.ts	100	100	100	100
🟢	fingerprint.providers.ts	100	100	100	100
🟢	fingerprint.service.ts	100	100	100	100
🟢	version.ts	100	100	100	100
🟢	src/lib/tokens	100	100	100	100
🟢	fingerprint-angular-settings-token.ts	100	100	100	100