ICU-23056 Update BRS commit checker to recognize done resolution status

Author: echeran

tools/commit-checker/README.md

@@ -38,7 +38,7 @@ Run the tool and save the result into REPORT.md; set fixVersion to the upcoming
 
     $ pipenv run python3 check.py \
         --jira-query "project=ICU AND fixVersion=64.1" \
-        --rev-range "release-63-1..upstream/maint/maint-64"
+        --rev-range "release-63-1..upstream/maint/maint-64" \
         > REPORT.md
 
 If the maintenance branch hasn't been cut yet, use upstream/main as the tip:

tools/commit-checker/check.py

@@ -66,9 +66,10 @@ class CommitReason(Enum):
 R_FIXED_NON_REPO        = "10025"
 R_FIX_SURVEY_TOOL       = "10022"
 R_OBSOLETE              = "10023"
+R_DONE                  = "10026"
 
 # so we don't miss any
-all_resolutions = [ R_NEEDS_MOREINFO, R_FIXED, R_NO_TIME_TO_DO_THIS, R_DUPLICATE, R_OUTOFSCOPE, R_ASDESIGNED, R_WONTFIX, R_FIXED_BY_OTHER_TICKET, R_NOTREPRO, R_FIX_SURVEY_TOOL, R_OBSOLETE, R_FIXED_NON_REPO, R_INVALID ]
+all_resolutions = [ R_NEEDS_MOREINFO, R_FIXED, R_NO_TIME_TO_DO_THIS, R_DUPLICATE, R_OUTOFSCOPE, R_ASDESIGNED, R_WONTFIX, R_FIXED_BY_OTHER_TICKET, R_NOTREPRO, R_FIX_SURVEY_TOOL, R_OBSOLETE, R_FIXED_NON_REPO, R_INVALID, R_DONE ]
 
 # constants for jira_issue.fields.issuetype.id
 # <https://unicode-org.atlassian.net/rest/api/2/issuetype>