Create / assign License

Add the unlicense to the Student Resource list to make it clear that Freeside / University of Hull are providing these resources for free without warranty thus no claims can be made through use of resources on the list.

LICENSE

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+This is free and unencumbered documentation released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this documentation for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+documentation to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+documentation under copyright law.
+
+THE DOCUMENTATION IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE DOCUMENTATION OR THE USE OR
+OTHER DEALINGS IN THE DOCUMENTATION.
+
+For more information, please refer to <https://unlicense.org>