Copyright for python-nest-asyncio source package in Jammy

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: nest_asyncio
Upstream-Contact: Ewald de Wit 
Source: https://github.com/erdewit/nest_asyncio

Files: *
Copyright: 2018-2020 Ewald de Wit 
License: BSD-2-clause

Files: debian/*
Copyright: 2019 Diego M. Rodriguez 
License: BSD-2-clause

License: BSD-2-clause
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are met:
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 * Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer.
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 * Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.
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 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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