Change name of --no-lock flag for install

[esuh-descript]

Is your feature request related to a problem? Please describe.

Although the documentation is clear on what --no-lock does, the name is quite unintuitive, as it could be interpreted to also be to ignore lockfiles on read, rather than just on write.

Describe the solution you'd like

Package managers in the Node ecosystem like pnpm or yarn call this option --frozen-lockfile or --immutable, respectively. I think that something along those lines might be a more intuitive name.

[deronnax]

+1, we got several people on our team confused by --no-lock.

[deronnax]

@frostming I think this issue can be closed (you probably wanted the commit 9c9426f to do it, but it did not)