Add list of projects using xCDAT

- Update GitHub issue templates to use latest tags

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -1,7 +1,7 @@
 name: Bug Report
 description: File a bug report to help us improve xCDAT
 title: "[Bug]: "
-labels: ["Type: Bug"]
+labels: ["type: bug"]
 assignees: []
 body:
     - type: textarea

.github/ISSUE_TEMPLATE/documentation.yml

@@ -1,7 +1,7 @@
 name: Documentation Update
 description: Update xCDAT documentation
 title: "[Doc]: "
-labels: ["Type: Documentation"]
+labels: ["type: docs"]
 assignees: []
 body:
     - type: textarea

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -1,7 +1,7 @@
-name: Feature Request
-description: Suggest an idea for xCDAT
+name: Enhanacement Request
+description: Suggest an enhancement for xCDAT
 title: "[Feature]: "
-labels: ["Type: Enhancement"]
+labels: ["type: enhancement"]
 assignees: []
 body:
     - type: textarea
@@ -21,7 +21,7 @@ body:
           description: |
               A clear and concise description of what you want to happen.
       validations:
-        required: false
+          required: false
 
     - type: textarea
       id: alternatives

README.rst

@@ -241,6 +241,19 @@ Environmental Research (`BER`_) within the `Department of Energy`_'s `Office of
 .. _Department of Energy: https://www.energy.gov/
 .. _Office of Science: https://science.osti.gov/
 
+Projects Using xCDAT
+--------------------
+
+xCDAT is actively being integrated as a core component of the `Program for Climate Model
+Diagnosis and Intercomparison (PCMDI) Metrics Package`_ and the `Energy Exascale Earth
+System Model Diagnostics (E3SM) Package`_. xCDAT is also included in the `E3SM Unified
+Anaconda Environment`_` that is deployed on various U.S. Department of Energy
+supercomputers to run E3SM software tools.
+
+.. _Program for Climate Model Diagnosis and Intercomparison (PCMDI) Metrics Package: https://pcmdi.github.io/pcmdi_metrics/
+.. _Energy Exascale Earth System Model Diagnostics (E3SM) Package: https://e3sm-project.github.io/e3sm_diags/_build/html/main/index.html
+.. _E3SM Unified Anaconda Environment: https://e3sm.org/resources/tools/other-tools/e3sm-unified-environment/
+
 License
 -------