Update issue templates to use new issue type field

GitHub added a new issue type field to indicate whether an issue is
a bug, feature, or task. This switches issue templates to use this
new field instead of labels.

Resolves NOAA-EMC#3368

.github/ISSUE_TEMPLATE/NCO_bug_report.yml

@@ -1,6 +1,7 @@
 name: NCO Bug Report
 description: Report something that is incorrect or broken
 labels: ["nco-bug", "triage"]
+type: ["bug"]
 assignees:
   - aerorahul
 

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -1,6 +1,7 @@
 name: Bug Report
 description: Report something that is incorrect or broken
-labels: ["bug", "triage"]
+labels: ["triage"]
+type: ["bug"]
 
 body:
   - type: markdown

.github/ISSUE_TEMPLATE/dump_request.yml

@@ -1,6 +1,7 @@
 name: Global Observation Dump Request
 description: Request additional dates be added to a machine's global dump archive (GDA) or introduce experimental dump data to the GDA
 labels: ["Static Data Mgmt"]
+type: ["task"]
 assignees:
   - KateFriedman-NOAA
   - WalterKolczynski-NOAA

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -1,6 +1,7 @@
 name: Feature Request
 description: Request new capability
-labels: ["feature", "triage"]
+labels: ["triage"]
+type: ["feature"]
 
 body:
   - type: markdown

.github/ISSUE_TEMPLATE/production_update.yml

@@ -1,6 +1,7 @@
 name: Production Update
 description: Begin the process of an operational production update
 labels: ["production update", "triage"]
+type: ["feature"]
 assignees:
   - WalterKolczynski-NOAA
   - KateFriedman-NOAA

.github/ISSUE_TEMPLATE/static_data.yml

@@ -1,6 +1,7 @@
 name: Static Data Update
 description: Request static data be added or updated
 labels: ["Static Data Mgmt"]
+type: ["task"]
 assignees:
   - KateFriedman-NOAA
   - WalterKolczynski-NOAA