Add "path" property to rewrite config for firebase hosting version

[mdietrichstein]

This PR adds a path property to google_firebase_hosting_version.config.rewrites.

The respective API property is documented here: https://firebase.google.com/docs/reference/hosting/rest/v1beta1/sites.versions#rewrite

This property is useful when running a Single Page Application (SPA) that uses pushState on Firebase Hosting, as explained here: https://firebase.google.com/docs/hosting/full-config#rewrites

Release Note Template for Downstream PRs (will be copied)

firebasehosting: added `path` field to `google_firebase_hosting_version`

[github-actions]

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[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes:

Diff report

Your PR generated some diffs in downstreams - here they are.

google provider: Diff ( 1 file changed, 32 insertions(+))
google-beta provider: Diff ( 3 files changed, 108 insertions(+))
terraform-google-conversion: Diff ( 1 file changed, 11 insertions(+))

[modular-magician]

Tests analytics

Total tests: 18
Passed tests: 17
Skipped tests: 0
Affected tests: 1

Click here to see the affected service packages

• firebasehosting

Action taken

Found 1 affected test(s) by replaying old test recordings. Starting RECORDING based on the most recent commit. Click here to see the affected tests

TestAccFirebaseHostingVersion_firebasehostingVersionPathExample

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[modular-magician]

$\textcolor{green}{\textsf{Tests passed during RECORDING mode:}}$
TestAccFirebaseHostingVersion_firebasehostingVersionPathExample[Debug log]

$\textcolor{green}{\textsf{No issues found for passed tests after REPLAYING rerun.}}$

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$\textcolor{green}{\textsf{All tests passed!}}$
View the build log or the debug log for each test

[rainshen49]

Seems reasonable to me from the Firebase side. Thank you for your contribution!