[feature][Python] Compile commonly used reference elements into Python module.

Replaces !243 (closed).

mentioned in merge request dune-common!1363 (merged)

added 1 commit

• a0cea63a - [cleanup][Python] Only provide one source file.

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added 7 commits

• a0cea63a...d45c81e1 - 5 commits from branch master
• b1363bd1 - [feature][Python] Compile commonly used reference elements into
• 45a64f53 - [cleanup][Python] Only provide one source file.

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added 1 commit

• e28ed6c0 - [feature][cmake] Use dune_add_pybind11_submodule to add precompiled

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merged

mentioned in commit 0d49535e