Add Hitachi EcoAssist solution and conformance results

Added Hitachi user , EcoAssist-Pro/LCA solution and conformance test results with NRI and Zeroboard. Please pull them, thank you.

catalog/conformance-tests/result-ecoassist-prolca-001.json

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+{
+  "tested_solution": {
+    "solution_id": "ecoassist-prolca",
+    "version": "02-00g_P"
+  },
+  "tested_by": {
+    "solution_name": "NRI-CTS",
+    "version": "0.9.15",
+    "solution_id": "nri-cts"
+  },
+  "test_result": "passed",
+  "test_date": "2023-05-26T17:53:02Z",
+  "pathfinder_version": "1.0.1"
+}

catalog/conformance-tests/result-ecoassist-prolca-002.json

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+{
+  "tested_solution": {
+    "solution_id": "ecoassist-prolca",
+    "version": "02-00g_P"
+  },
+  "tested_by": {
+    "solution_name": "zeroboard",
+    "version": "2.20.0",
+    "solution_id": "zeroboard"
+  },
+  "test_result": "passed",
+  "test_date": "2023-05-26T17:27:39Z",
+  "pathfinder_version": "1.0.1"
+}

catalog/solutions/ecoassist-prolca/02-00g_P/solution.json

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+{
+  "id": "ecoassist-prolca",
+  "name": "EcoAssist-Pro/LCA",
+  "version": "02-00g_P",
+  "website": "https://www.hitachi.co.jp/products/it/control_sys/ecoassist/lca/index.html",
+  "provider": "hitachi",
+  "summary": "\"EcoAssist-Pro/LCA\" is a BOM-based system that enables calculation of product carbon footprint in line with actual conditions by linking with related systems such as the weight of materials and parts to be procured, the amount of electricity consumed in its processing, assembly, and inspection processes, and the electricity consumed by products."
+}

catalog/users/hitachi.json

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+{
+    "id": "hitachi",
+    "kind": "solutionprovider",
+    "name": "Hitachi, Ltd.",
+    "email": "",
+    "website": "https://www.hitachi.com/",
+    "logo": "Logo data is uploaded to Github. (pact-catalog/users/hitachi-cslogo.zip)"
+}