Migrate the project to TypeScript 6

[elchininet]

This pull request migrates the project to TypeScript 6 and with this change multiple things needed to be changed:

• The target of library is now es6 instead of the previous es5
• Replaced the deprecated rollup-plugin-ts package and migrated to @rollup/plugin-typescript
  a. This required to use rollup-plugin-dts together with rollup-plugin-tsconfig-paths to bundle the d.ts files of the library.
• Refactored the code to make it compatible with TypeScript 6

[coveralls]

coverage: 100.0%. remained the same
when pulling f826a93 on migrate_project_to_typescript_6
into 8b3c8a5 on master.