Implement telemetry types generator

[breedloj]

Description of changes:
Telemetry types generation, ported from Kotlin using JavaPoet and implemented as a Maven Mojo. Generator is run during plugin build and produces output in target/generated-sources. This is a first pass implementation and the types will likely change/expand as we integrate with telemetry and feedback sources in the codebase.

Example definition for a Q chat end chat event:

    public static class EndChatEventBuilder {
        private String amazonqConversationId;

        private Double amazonqEndOfTheConversationLatency;

        private String credentialStartUrl;

        private boolean passive;

        private Instant createTime;

        private Double value;

        private EndChatEventBuilder() {
        }

        /**
         * Uniquely identifies a message with which the user interacts.
         */
        public EndChatEventBuilder amazonqConversationId(String amazonqConversationId) {
            this.amazonqConversationId = amazonqConversationId;
            return this;
        }

        /**
         * Total time from start to end
         */
        public EndChatEventBuilder amazonqEndOfTheConversationLatency(
                Double amazonqEndOfTheConversationLatency) {
            this.amazonqEndOfTheConversationLatency = amazonqEndOfTheConversationLatency;
            return this;
        }

        /**
         * The start URL of current SSO connection
         */
        public EndChatEventBuilder credentialStartUrl(String credentialStartUrl) {
            this.credentialStartUrl = credentialStartUrl;
            return this;
        }

        /**
         * Indicates that the metric was not caused by an explicit user action.
         */
        public EndChatEventBuilder passive(boolean passive) {
            this.passive = passive;
            return this;
        }

        /**
         * The time that the event took place.
         */
        public EndChatEventBuilder createTime(Instant createTime) {
            this.createTime = createTime;
            return this;
        }

        /**
         * Value based on unit and call type.
         */
        public EndChatEventBuilder value(Double value) {
            this.value = value;
            return this;
        }

        public MetricDatum build() {
            List<MetadataEntry> metadata = new ArrayList<MetadataEntry>();
            metadata.add(MetadataEntry.builder().key("amazonqConversationId").value(String.valueOf(amazonqConversationId)).build());
            metadata.add(MetadataEntry.builder().key("amazonqEndOfTheConversationLatency").value(String.valueOf(amazonqEndOfTheConversationLatency)).build());
            metadata.add(MetadataEntry.builder().key("credentialStartUrl").value(String.valueOf(credentialStartUrl)).build());
            metadata.add(MetadataEntry.builder().key("passive").value(String.valueOf(passive)).build());
            metadata.add(MetadataEntry.builder().key("createTime").value(String.valueOf(createTime)).build());
            metadata.add(MetadataEntry.builder().key("value").value(String.valueOf(value)).build());

            return MetricDatum.builder()
                .metricName("amazonq_endChat")
                .epochTimestamp((createTime != null ? createTime : Instant.now()).toEpochMilli())
                .unit(Unit.NONE)
                .value(value != null ? value : 1.0)
                .passive(passive)
                .metadata(metadata)
                .build();
        }
    }

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[breedloj]

Hydrated full telemetry payloads:

Sample Q metric event

{
    "AWSProduct": "AWS Toolkit For Eclipse",
    "AWSProductVersion": "1.0.0-snapshot",
    "ClientID": "8c230dd7-ffae-4889-9aa4-1b19af7c44ce",
    "OS": "Mac OS X",
    "OSVersion": "14.7",
    "ParentProduct": "Eclipse",
    "ParentProductVersion": "1.0",
    "MetricData": [
        {
            "MetricName": "amazonq_isAcceptedCodeChanges",
            "EpochTimestamp": 1727739729619,
            "Unit": "None",
            "Value": 1.0,
            "Metadata": [
                {
                    "Key": "amazonqConversationId",
                    "Value": "1234"
                },
                {
                    "Key": "amazonqNumberOfFilesAccepted",
                    "Value": "1.0"
                },
                {
                    "Key": "credentialStartUrl",
                    "Value": "null"
                },
                {
                    "Key": "enabled",
                    "Value": "false"
                },
                {
                    "Key": "passive",
                    "Value": "false"
                },
                {
                    "Key": "createTime",
                    "Value": "2024-09-30T23:42:09.619139Z"
                },
                {
                    "Key": "value",
                    "Value": "1.0"
                }
            ],
            "Passive": false
        }
    ]
}

Feedback payload

{
    "AWSProduct": "AWS Toolkit For Eclipse",
    "AWSProductVersion": "1.0.0-snapshot",
    "OS": "Mac OS X",
    "OSVersion": "14.7",
    "ParentProduct": "Eclipse",
    "ParentProductVersion": "1.0",
    "Metadata": [
        {
            "Key": "result",
            "Value": "Succeeded"
        },
        {
            "Key": "passive",
            "Value": "false"
        },
        {
            "Key": "createTime",
            "Value": "2024-09-30T23:46:32.215723Z"
        },
        {
            "Key": "value",
            "Value": "1.0"
        }
    ],
    "Sentiment": "Positive",
    "Comment": "This is test feedback sent from the Amazon Q for Eclipse plugin"
}