added postgres intent

intent_types/postgres/v1alpha1/README.md

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+# PostgreSQL Intent Type
+
+## Overview
+
+This intent type is designed to represent a PostgreSQL database configuration within an Infrastructure Catalog. It encapsulates the necessary information for provisioning and managing a PostgreSQL database instance.
+
+## Fields
+
+- `metadata`: Contains auxiliary information such as the maintainer, documentation link, labels, name, and description.
+- `kind`: Specifies the kind of the resource, in this case, `PostgreSQL`.
+- `spec`: Contains detailed information about the PostgreSQL instance including the PostgreSQL version and architecture.
+- `disabled`: Indicates if the resource is disabled (`true`) or enabled (`false`) by default.
+- `flavor`: Specifies the default implementation details, including the version and name.
+
+## Specification
+
+In the `spec` object:
+- `version`: Specifies the PostgreSQL version (e.g., `5.7`, `8.0`).
+- `configuration_parameters`: A field for specifying PostgreSQL parameters (e.g., `max_connections: "1000"`).
+- `encryption`: A field to encrypt the db connection between client and server.
+- `replication`: A field to define the type of replication.
+- `backup`: A field to define if backup is to be taken and how frequently it is to be done.
+
+## Example
+
+See the `sample.json` file for an example instance of this intent type.

intent_types/postgres/v1alpha1/intent_type.json

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+{
+    "name": "PostgreSQL Database",
+    "api_version": "v1alpha1",
+    "description": "An Intent Type for deploying PostgreSql databases, following Kubernetes style version naming."
+}
+

intent_types/postgres/v1alpha1/sample.json

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+{
+    "api_version": "v1alpha1",
+    "metadata": {
+        "maintainer": "ishaan@example.com",
+        "documentation_link": "./README.md",
+        "labels": {
+            "owner": "infrastructure@example.com"
+          },
+          "name": "postgres-instance",
+          "description": "A Postgres database instance."
+    },
+    "kind": "postgreSQL",
+    "spec": {
+        "version": "16.1",
+        "configuration_parameters": {
+            "max_connections": "1000"
+        },
+        "encryption": {
+            "enabled": true,
+            "type": "TLS"
+        },
+        "replication": {
+            "enabled": true,
+            "type": "master"
+        },
+        "backup": {
+            "enabled": true,
+            "frequency": "monthly"
+        }
+    },
+    "disabled": false,
+    "flavor": {
+        "version": "1.0",
+        "name": "standard"
+    },
+    "advanced": {}
+}

intent_types/postgres/v1alpha1/schema.json

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+{
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "type": "object",
+    "properties": {
+      "api_version": {
+        "type": "string"
+      },
+      "metadata": {
+        "type": "object",
+        "properties": {
+          "maintainer": {
+            "type": "string",
+            "format": "email"
+          },
+          "documentation_link": {
+            "type": "string"
+          },
+          "labels": {
+            "type": "object",
+            "properties": {
+              "owner": {
+                "type": "string",
+                "format": "email"
+              }
+            },
+            "required": ["owner"]
+          },
+          "name": {
+            "type": "string"
+          },
+          "description": {
+            "type": "string"
+          }
+        },
+        "required": ["maintainer", "documentation_link", "labels", "name", "description"]
+      },
+      "kind": {
+        "type": "string"
+      },
+      "spec": {
+        "type": "object",
+        "properties": {
+          "version": {
+            "type": "string"
+          },
+          "configuration_parameters": {
+            "type": "object",
+              "additionalProperties": {"type": "string"},
+              "description": "Configuration Parameters for PostgresSQL."
+          },
+          "encryption": {
+            "type": "object",
+            "properties": {
+              "enabled": {
+                "type": "boolean"
+              },
+              "type": {
+                "type": "string"
+              }
+            },
+            "required": ["enabled", "type"]
+          },
+          "replication": {
+            "type": "object",
+            "properties": {
+              "enabled": {
+                "type": "boolean"
+              },
+              "type": {
+                "type": "string"
+              },
+              "replica_count": {"type": "integer"}
+            },
+            "required": ["enabled", "type"]
+          },
+          "backup": {
+            "type": "object",
+            "properties": {
+              "enabled": {
+                "type": "boolean"
+              },
+              "frequency": {
+                "type": "string"
+              }
+            },
+            "required": ["enabled", "frequency"]
+          }
+        },
+        "required": ["version", "configuration_parameters", "encryption", "replication", "backup"]
+      },
+      "disabled": {
+        "type": "boolean"
+      },
+      "flavor": {
+        "type": "object",
+        "properties": {
+          "version": {
+            "type": "string"
+          },
+          "name": {
+            "type": "string"
+          }
+        },
+        "required": ["version", "name"]
+      },
+      "advanced": {
+        "type": "object"
+      }
+    },
+    "required": ["api_version", "metadata", "kind", "spec", "disabled", "flavor"]
+}
+