This normalizes the Vuex action and mutation names according to our
established [request/receive/fetch pattern][0].

Part of [Remove parsed_license_report flag from front end code][1].

The batch case-preserving renaming was achieved using [repren][2]:

    repren --word-breaks --preserve-case -p patterns ee

where the `patterns` file contains:

    requestLoadManagedLicenses	requestManagedLicenses
    receiveLoadManagedLicenses	receiveManagedLicensesSuccess
    receiveLoadManagedLicensesError	receiveManagedLicensesError
    loadManagedLicenses	fetchManagedLicenses
    #
    requestLoadParsedLicenseReport	requestParsedLicenseReport
    receiveLoadParsedLicenseReport	receiveParsedLicenseReportSuccess
    receiveLoadParsedLicenseReportError	receiveParsedLicenseReportError
    receiveLoadLicenseReportError	receiveParsedLicenseReportError
    loadParsedLicenseReport	fetchParsedLicenseReport

Note that the `receiveLoadLicenseReportError` identifier is also being
renamed to `receiveParsedLicenseReportError`, since it is functionally
the same as the `receiveLoadParsedLicenseReportError` action/mutation.
The resulting duplicates will be removed by the next commit.

[0]: https://docs.gitlab.com/ce/development/fe_guide/vuex.html#actions-pattern-request-and-receive-namespaces
[1]: https://gitlab.com/gitlab-org/gitlab/issues/37271
[2]: https://github.com/jlevy/repren