Add/rename braces/brackets/parenthesis icons and improve braces/json metadata (#1063)

* Add `square-brackets` icon

* Add `parentheses` icon

* Improve `curly-braces`/`json` metadata

* Refine `parentheses` icon

Match `path`s in #1134.

* Rename `square-brackets` to `brackets`

* Rename `curly-braces` to `braces`

* Update icons/parentheses.json

---------

Co-authored-by: Karsa <contact@karsa.org>

icons/braces.json

@@ -0,0 +1,17 @@
+{
+  "$schema": "../icon.schema.json",
+  "tags": [
+    "json",
+    "code",
+    "token",
+    "curly brackets",
+    "data"
+  ],
+  "categories": [
+    "development",
+    "files"
+  ],
+  "aliases": [
+    "curly-braces"
+  ]
+}

icons/brackets.json

@@ -1,12 +1,14 @@
 {
   "$schema": "../icon.schema.json",
   "tags": [
-    "json",
     "code",
-    "token"
+    "token",
+    "array",
+    "list",
+    "square"
   ],
   "categories": [
     "development",
     "files"
   ]
-}
+}

icons/brackets.svg

@@ -0,0 +1,14 @@
+<svg
+  xmlns="http://www.w3.org/2000/svg"
+  width="24"
+  height="24"
+  viewBox="0 0 24 24"
+  fill="none"
+  stroke="currentColor"
+  stroke-width="2"
+  stroke-linecap="round"
+  stroke-linejoin="round"
+>
+  <path d="M16 3h3v18h-3" />
+  <path d="M8 21H5V3h3" />
+</svg>

icons/file-json-2.json

@@ -3,7 +3,8 @@
   "tags": [
     "code",
     "json",
-    "curly braces"
+    "curly braces",
+    "curly brackets"
   ],
   "categories": [
     "files",

icons/file-json.json

@@ -3,7 +3,8 @@
   "tags": [
     "code",
     "json",
-    "curly braces"
+    "curly braces",
+    "curly brackets"
   ],
   "categories": [
     "files",

icons/parentheses.json

@@ -0,0 +1,23 @@
+{
+  "$schema": "../icon.schema.json",
+  "tags": [
+    "code",
+    "token",
+    "parenthesis",
+    "parens",
+    "brackets",
+    "parameters",
+    "arguments",
+    "args",
+    "input",
+    "call",
+    "maths",
+    "formula",
+    "function"
+  ],
+  "categories": [
+    "development",
+    "files",
+    "maths"
+  ]
+}

icons/parentheses.svg

@@ -0,0 +1,14 @@
+<svg
+  xmlns="http://www.w3.org/2000/svg"
+  width="24"
+  height="24"
+  viewBox="0 0 24 24"
+  fill="none"
+  stroke="currentColor"
+  stroke-width="2"
+  stroke-linecap="round"
+  stroke-linejoin="round"
+>
+  <path d="M8 21s-4-3-4-9 4-9 4-9" />
+  <path d="M16 3s4 3 4 9-4 9-4 9" />
+</svg>