Adds `@types/lodash.camelcase` to `twenty-shared`.
**Why:** `lodash.camelcase` has no bundled types. Those types used to
come from the root `devDependencies`; after scoped/hoisted deps
(#20140), they are no longer guaranteed in the Docker `common-deps`
graph, so `twenty-shared:build` (pulled in before server Lingui) fails
with TS7016. Declaring the types on the package that imports
`lodash.camelcase` fixes CD.
Co-authored-by: Cursor <cursoragent@cursor.com>