Improve linspace implementation with non-scalar inputs (#2712)

The PR closes #2084.

This PR improves implementation of `dpnp.linspace` function aligning it
with the latest changes added to NumPy.
The tests coverage is also extended to verify more use cases. 4d0462d

Author: github-actions[bot]

.buildinfo

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@@ -2860,6 +2860,8 @@ <h1>Source code for dpnp.dpnp_iface_arraycreation</h1><div class="highlight"><pr
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 <span class="sd">        ``False`` the sequence consists of all but the last of ``num + 1``</span>
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 <span class="sd">        The desired dtype for the array. If not given, a default dtype will be</span>
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