Solution to resistor-color-trio in bash

bash/resistor-color-trio/.exercism/config.json

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+{
+  "authors": [
+    "glennj"
+  ],
+  "contributors": [
+    "alirezaghey",
+    "guygastineau",
+    "IsaacG"
+  ],
+  "files": {
+    "solution": [
+      "resistor_color_trio.sh"
+    ],
+    "test": [
+      "resistor_color_trio.bats"
+    ],
+    "example": [
+      ".meta/example.sh"
+    ]
+  },
+  "blurb": "Convert color codes, as used on resistors, to a human-readable label.",
+  "source": "Maud de Vries, Erik Schierboom",
+  "source_url": "https://github.com/exercism/problem-specifications/issues/1549"
+}

bash/resistor-color-trio/.exercism/metadata.json

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+{"track":"bash","exercise":"resistor-color-trio","id":"a9b9f196cdd6470bb7513963ab18923c","url":"https://exercism.org/tracks/bash/exercises/resistor-color-trio","handle":"Kimawari","is_requester":true,"auto_approve":false}