Resolves - Remove GITLAB_TOKEN Requirement and AASHTO-2023 web service -- add CSV response

Resolves #57 (closed) and #54 (closed)

• Remove section in repositories.gradle file needing GITLAB_TOKEN
• Add ability to have web service return CSV response ?format=CSV

src/aashto/src/main/java/gov/usgs/earthquake/nshmp/netcdf/www/NetcdfController.java

@@ -23,6 +23,7 @@ import io.micronaut.runtime.event.annotation.EventListener;
 import io.swagger.v3.oas.annotations.Hidden;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.media.Content;
+import io.swagger.v3.oas.annotations.media.ExampleObject;
 import io.swagger.v3.oas.annotations.media.Schema;
 import io.swagger.v3.oas.annotations.responses.ApiResponse;
 import io.swagger.v3.oas.annotations.tags.Tag;
@@ -70,13 +71,24 @@ public class NetcdfController {
       description = "### Returns a risk-targeted design response spectrum for a " +
           "user-specified latitude, longitude, and site class.\n" +
 
-          "Enter the latitude and longitude select the site class, and press `Execute`.\n" +
+          "Enter the latitude and longitude, select the site class " +
+          "and format (optional), and press `Execute`.\n" +
+
+          "### Service Response Types\n" +
+          "The web service can respond in JSON or CSV format.\n" +
+          "<br><br>" +
+          "Choose the format type by adding a `format` query to the service call:" +
+          "`?format=JSON` or `?format=CSV`\n" +
+          "<br><br>" +
+          "Default: `JSON`\n\n" +
 
           "### Service Call Pattern\n" +
           "This service call is slashed delimited with pattern: " +
           "`/spectra/{longitude}/{latitude}/{siteClass}`\n" +
           "<br><br>" +
-          "Example: `/spectra/-118/34/A`\n",
+          "Example: `/spectra/-118/34/A`\n" +
+          "<br><br>" +
+          "CSV Example: `/spectra/-118/34/A?format=CSV`\n",
       operationId = "aashto-slash")
   @ApiResponse(
       description = "Spatially interpolates data from https://doi.org/10.5066/P9Z206HY",
@@ -86,7 +98,14 @@ public class NetcdfController {
               mediaType = MediaType.APPLICATION_JSON,
               schema = @Schema(implementation = Response.class)),
           @Content(
-              mediaType = MediaType.TEXT_CSV)
+              mediaType = MediaType.TEXT_CSV,
+              examples = @ExampleObject(
+                  name = "CSV",
+                  value = "AASHTO-2023 Web Service\n" +
+                      "\n" +
+                      "Longitude,-105.0,Latitude,40.0,SiteClass,BC\n" +
+                      "Period (s),0.0,0.01,0.02,0.03,0.05,0.075, ...\n" +
+                      "Spectral Acceleration (g),0.073,0.08,0.12,0.14,0.18, ...\n"))
       })
   @Get(uri = "/{longitude}/{latitude}/{siteClass}{?format}",
       produces = { MediaType.APPLICATION_JSON, MediaType.TEXT_CSV })