fix(git-url): fix SSH to HTTPS conversion for bitbucket-server

[amezin]

Changes

Force git-url-parse to insert /scm/ when converting SSH URLs to HTTPS on bitbucket-server.

Adjust detectPlatform() to detect bitbucket-server from host type.

Context

Fixes git submodules on BitBucket Server.

SSH URLs on BitBucket Server look like this: ssh://git@git.my.com:7999/project/repo.git.
HTTPS URLs look like this: https://git.mycompany.com/scm/proj/repo.git.

git-url-parse doesn't recognize the SSH URL as BitBucket Server. And it likely can't: the only hint is the default SSH port number, which can be changed, or can be used by other service.

Documentation (please check one with an [x])

• I have updated the documentation, or
• No documentation update is required

How I've tested my work (please select one)

I have verified these changes via:

• Code inspection only, or
• Newly added/modified unit tests, or
• No unit tests but ran on a real repository, or
• Both unit tests + ran on a real repository

[renovate-release]

🎉 This PR is included in version 37.399.1 🎉

The release is available on:

• GitHub release
• npm package (@latest dist-tag)
• 37.399.1

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