Port custom icons from Copilot Loops (#1132)

* adds icons used for Copilot Loops

* Optimize SVGs

* manually updates snapshots

* adds changeset

---------

Co-authored-by: Mike Perrotti <actions@github.com>

Author: mperrotti

.changeset/dry-cows-visit.md

@@ -0,0 +1,5 @@
+---
+'@primer/octicons': minor
+---
+
+Adds icons used for Copilot Loops

icons/exclamation-16.svg

@@ -73,6 +73,7 @@
   "diff-removed": ["deleted", "subtracted", "dash"],
   "diff-renamed": ["moved", "arrow"],
   "ellipsis": ["dot", "read", "more", "hidden", "expand"],
+  "exclamation": ["warning", "alert", "emphasis"],
   "eye": ["look", "watch", "see"],
   "eye-closed": ["hidden", "invisible", "concealed", ""],
   "file": ["file", "text", "words"],
@@ -89,6 +90,8 @@
   "filter-remove": ["funnel", "filter", "remove", "delete"],
   "fiscal-host": ["safe", "money"],
   "flame": ["fire", "hot", "burn", "trending"],
+  "flowchart": ["diagram", "chart", "process", "workflow", "loop", "nodes", "flow"],
+  "focus-center": ["target", "focus", "center"],
   "fold": ["unfold", "hide", "collapse"],
   "fold-down": ["unfold", "hide", "collapse", "down"],
   "fold-up": ["unfold", "hide", "collapse", "up"],

icons/exclamation-24.svg

@@ -103,6 +103,7 @@ exports[`@primer/octicons-react should not update exports without a semver chang
   "DownloadIcon",
   "DuplicateIcon",
   "EllipsisIcon",
+  "ExclamationIcon",
   "EyeClosedIcon",
   "EyeIcon",
   "FeedDiscussionIcon",
@@ -145,6 +146,8 @@ exports[`@primer/octicons-react should not update exports without a semver chang
   "FilterRemoveIcon",
   "FiscalHostIcon",
   "FlameIcon",
+  "FlowchartIcon",
+  "FocusCenterIcon",
   "FoldDownIcon",
   "FoldIcon",
   "FoldUpIcon",