add TIME type conversion to string converter

[p-eye]

The converter for converting STRING to DATE type is working well,
but while converting a STRING to TIME type, an error occurred because a converter for this type does not exist. The error message is (NotSupportedType) cannot take column type TIME for string column.

To fix this, I have added a converter to transform STRING type into BigQuery TIME type. I only updated the string_converter since the format "%H:%M:%S.%6N" is not compatible with the TIMESTAMP type, so I did not modify the timestamp_converter.

--- my bigquery table ---

--- works well with DATE column ---

in:
  type: inline
  schema:
    - {name: date_column, type: string}
  data:
    - {date_column: "2024-01-01"}
out:
  type: bigquery
  mode: append
  auth_method: service_account
  json_keyfile: my_keyfile
  location: asia-northeast3
  project: my_project
  destination_project: my-destination-project
  compression: GZIP
  source_format: NEWLINE_DELIMITED_JSON
  default_timezone: Asia/Seoul
  dataset: my_dataset
  table: my_table
  column_options:
  - name: date_column
    type: DATE

--- not works with TIME column ---

in:
  type: inline
  schema:
    - {name: time_column, type: string}
  data:
    - {time_column: "00:03:22"}
out:
  type: bigquery
  mode: append
  auth_method: service_account
  json_keyfile: my_keyfile
  location: asia-northeast3
  project: my-project
  destination_project: my-destination-project
  compression: GZIP
  source_format: NEWLINE_DELIMITED_JSON
  default_timezone: Asia/Seoul
  dataset: my_dataset
  table: my_table
  column_options:
  - name: time_column
    type: TIME

[p-eye]

@hiroyuki-sato
Hi, I opened a new PR. Could you please review it?
thanks

[hiroyuki-sato]

@p-eye Could you check my comments? (Thank you for proposing PR.)

[dp-daesung]

This is exactly what I need. I'm waiting for it to merge.

[hiroyuki-sato]

Thanks. I'll approve after removing trailing spaces.

[hiroyuki-sato]

@p-eye LGTM 👍 Thanks! @joker1007 Could you take a look when you get a chance?

[p-eye]

hi, any updates? 😃

[hiroyuki-sato]

@p-eye I pinged reviewer. The maintainer will review it soon. Please wait a bit

[joker1007]

I understand. LGTM.

[hiroyuki-sato]

Thanks!

[hiroyuki-sato]

@p-eye , @dp-daesung embulk-output-bigquery 0.7.3 has been released. Enjoy.
@p-eye Thank you for your contribution.