-Included the awips2.repo file since we had never added it before
-Renamed old v18 awips_install.sh script
-Updated awips_install.sh script for v20
-Update version in buildEnvironment.sh
-Renamed httpd to pypies to actually work correctly
-Updated banner.txt to include correct Unidata wording
-Update setup.sh
- brought over the previous LICENSE from branch v18.2.1
- brought over the previous README from v18 and updated for references to "NSF Unidata" and other modern updates
- renamed awips_install-v20.sh to the regular name of awips_install.sh
- brought over the environment.yml file from the branch v18.2.1