[develop]: Update WM license and documentation logo

[gspetro-NOAA]

Commit Queue Requirements:

• Fill out all sections of this template.
• All sub component pull requests have been reviewed by their code managers. - N/A
• Run the full RT suite (compared to current baselines) on either Hera/Derecho/Hercules AND have committed the log to my PR branch. - N/A - This is a text-only update that does not affect compiled code. Docs for my fork can be viewed at https://gsp-wm.readthedocs.io/en/text-us-174/
• Add list of all failed regression tests in "Regression Tests" section. - N/A

PR Information

Description

This PR:

• Updates the LICENSE.md file to include all WM subcomponents with a separate license
• Update component list in README.md
• Adds a UFS/EPIC logo to the documentation (per EPIC management request)
• Adds a linkcheck option to the documentation Makefile to facilitate link checking and link updates
• Updates broken/problematic links
• Adds a requirements.in file that can be used with pip-tools to automatically generate a requirements.txt file with pinned, up-to-date versions of dependencies that play nicely together.
• Updates requirements.txt file to include more recent Sphinx version and any corresponding dependencies

Commit Message

Update license; add doc logo, linkcheck, requirements.in (#2110)

Priority

• Critical Bugfix (This PR contains a critical bug fix and should be prioritized.)
• High (This PR contains a feature or fix needed for a time-sensitive project (eg, retrospectives, implementations))
• Normal

Blocking Dependencies

N/A.

Git Issues Fixed By This PR

#2110

Changes

Subcomponent (with links)

• AQM
• CDEPS
• CICE
• CMEPS
• CMakeModules
• FV3
• GOCART
• HYCOM
• MOM6
• NOAHMP
• WW3
• stochastic_physics
• none

Input data

• No changes are expected to input data.
• Changes are expected to input data:
  • New input data.
  • Updated input data.

Regression Tests:

• No changes are expected to any regression test.
• Changes are expected to the following tests:
  - None

Libraries

• Not Needed
• Needed
  • Create separate issue in JCSDA/spack-stack asking for update to library. Include library name, library version.
  • Add issue link from JCSDA/spack-stack following this item

Testing Log:

• RDHPCS
  • Hera
  • Orion
  • Hercules
  • Jet
  • Gaea
  • Derecho
• WCOSS2
  • Dogwood/Cactus
  • Acorn
• CI
  • Completed
• opnReqTest
  • N/A
  • Log attached to comment

[jkbk2004]

merged with #2066