docs: update domain types to include new time only type

also added context around which implementation support given backend implementations as time only works on duckdb solution atm

Author: georgeRobertson

docs/detailed_guidance/domain_types.md

@@ -4,24 +4,24 @@ Domain types are custom defined pydantic types that solve common problems with u
 This might include Postcodes, NHS Numbers, dates with specific formats etc.
 
 Below is a list of defined types, their output type and any contraints. Nested beneath them are any constraints that area allowed and their default values if there are any.
-| Defined Type | Output Type | Contraints & Defaults |
-| ------------ | ----------- | --------------------- |
-| NHSNumber | str |
-| permissive_nhs_number | str | <li> warn_on_test_numbers = False </li> |
-| Postcode | str |
-| OrgId | str |
-| conformatteddate | date | <li>date_format: str</li><li>ge: date</li><li>le: date</li><li>gt: date</li><li>lt: date</li> |
-| formatteddatetime | datetime | <li>date_format: str </li><li>timezone_treatment: one_of ["forbid", "permit", "require] = "permit"</li> |
-| reportingperiod | date | <li>reporting_period_type: one_of ["start", "end"]</li><li>date_format: str = "%Y-%m-%d"</li> |
-| alphanumeric | str | <li>min_digits : NonNegativeInt = 1</li><li>max_digits: PositiveInt = 1</li> |
-| identifier | str | <li>min_digits : NonNegativeInt = 1</li><li>max_digits: PositiveInt = 1</li>
+| Defined Type | Output Type | Contraints & Defaults | Supported Implementations |
+| ------------ | ----------- | --------------------- | ------------------------- |
+| NHSNumber | str | | Spark, DuckDB |
+| permissive_nhs_number | str | <li> warn_on_test_numbers = False </li> | Spark, DuckDB |
+| Postcode | str | | Spark, DuckDB |
+| OrgId | str | | Spark, DuckDB |
+| conformatteddate | date | <li>date_format: str</li><li>ge: date</li><li>le: date</li><li>gt: date</li><li>lt: date</li> | Spark, DuckDB |
+| formatteddatetime | datetime | <li>date_format: str </li><li>timezone_treatment: one_of ["forbid", "permit", "require] = "permit"</li> | Spark, DuckDB |
+| formattedtime | time | <li>time_format: str </li><li>timezone_treatment: one_of ["forbid", "permit", "require"] = "permit" | DuckDB |
+| reportingperiod | date | <li>reporting_period_type: one_of ["start", "end"]</li><li>date_format: str = "%Y-%m-%d"</li> | Spark, DuckDB |
+| alphanumeric | str | <li>min_digits : NonNegativeInt = 1</li><li>max_digits: PositiveInt = 1</li> | Spark, DuckDB |
+| identifier | str | <li>min_digits : NonNegativeInt = 1</li><li>max_digits: PositiveInt = 1</li> | Spark, DuckDB |
 
-Other types that are allowed include:
+**Other types that are allowed include:**
 - str
 - int
 - date
 - datetime
 - Decimal
 - float
-
-And any types that are included in [pydantic version 1.10](https://docs.pydantic.dev/1.10/usage/types/#pydantic-types)
+- Any types that are included in [pydantic version 1.10](https://docs.pydantic.dev/1.10/usage/types/#pydantic-types)