add: rawstor boilerplate

[VasilyStepanov]

No description provided.

[gemini-code-assist]

Code Review

This pull request introduces support for a new 'Rawstor' storage pool backend, including build configuration options, enum definitions, registration logic, and boilerplate driver files. The code review highlights several critical and minor issues: a mismatch between the virStoragePool enum and its string representation in VIR_ENUM_IMPL which will break XML parsing, minor formatting and indentation issues in the storage pool options, copy-paste remnants in the header comments of the new backend, and commented-out placeholder code with non-English comments that should be cleaned up.

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[gemini-code-assist]

The order of elements in VIR_ENUM_IMPL must exactly match the virStoragePoolType enum in src/conf/storage_conf.h. Currently, VIR_STORAGE_POOL_RAWSTOR is placed at the end of the enum (index 14), but "rawstor" is inserted here at index 9 (before "rbd"). This mismatch will break the mapping between the enum and its string representation, causing bugs in XML parsing/formatting and API calls.

Please move "rawstor" to the end of the VIR_ENUM_IMPL list (after "vstorage").

              "rbd", "sheepdog", "gluster",

[gemini-code-assist]

The indentation of the closing brace for .poolOptions is incorrect (6 spaces instead of 5), and it is missing a trailing comma. To match the style of other entries in this array, it should be indented with 5 spaces and have a trailing comma.

    {.poolType = VIR_STORAGE_POOL_RAWSTOR,
     .poolOptions = {
         .flags = (VIR_STORAGE_POOL_SOURCE_HOST |
                   VIR_STORAGE_POOL_SOURCE_NETWORK |
                   VIR_STORAGE_POOL_SOURCE_NAME),
     },
    },

[gemini-code-assist]

The header comment block contains copy-paste remnants from storage_backend_iscsi.h. It mentions storage_backend_iscsi.h and "iSCSI handling" instead of storage_backend_rawstor.h and "Rawstor handling".

Suggested change

	* storage_backend_iscsi.h: storage backend for iSCSI handling
	* storage_backend_rawstor.h: storage backend for Rawstor handling

[gemini-code-assist]

The boilerplate code contains commented-out placeholder fields with Russian comments (// ... остальные обработчики). These should be removed or replaced with a standard English TODO comment to maintain code quality and consistency in the codebase.

Suggested change

	// .refreshPool = virStorageBackendMyVhostRefreshPool,
	// .createVol = virStorageBackendMyVhostCreateVol,
	// ... остальные обработчики
	/* TODO: implement storage pool/volume inherited/required callbacks */