Adds liquibase.psql.conf example (DAT-10303) (#2939)

* [DAT-10303] Adds example liquibase.psql.conf file.

* [DAT-10303] Fixes verbiage.

* [DAT-10303] Adds example liquibase.psql.conf file to /xml too.

* [DAT-10303] Removes unnecessary #.

liquibase-core/src/main/resources/liquibase/examples/sql/liquibase.psql.conf

@@ -0,0 +1,46 @@
+####     _     _             _ _                      _____
+##      | |   (_)           (_) |                    |  __ \
+##      | |    _  __ _ _   _ _| |__   __ _ ___  ___  | |__) | __ ___
+##      | |   | |/ _` | | | | | '_ \ / _` / __|/ _ \ |  ___/ '__/ _ \
+##      | |___| | (_| | |_| | | |_) | (_| \__ \  __/ | |   | | | (_) |
+##      \_____/_|\__, |\__,_|_|_.__/ \__,_|___/\___| |_|   |_|  \___/
+##                  | |
+##                  |_|
+##
+##      The liquibase.psql.conf file stores properties which are used during the
+##      execution of the PostgreSQL psql tool.
+##      Learn more: https://www.liquibase.org/documentation/config_properties.html
+####
+
+# The full path to the psql executable.
+# Sample Linux path
+# liquibase.psql.path=/usr/local/bin/psql
+# Sample Windows path
+# liquibase.psql.path="C:\\Program Files\\PostgreSQL\\<version>\\bin\\psql.exe"
+
+# Timeout value for the execution of the psql tool
+# Measured in seconds. -1 to disable.
+liquibase.psql.timeout=-1
+
+# Flag to indicate whether or not to keep the temporary SQL file after execution of psql.
+# True = keep False = delete (default)
+liquibase.psql.keep.temp=false
+
+# OPTIONAL Flag to designate the location to store temporary SQL file after execution of psql.
+# Liquibase will attempt to use path exactly as entered, so please ensure it complies with your OS requirements.
+# liquibase.psql.keep.temp.path=
+
+# OPTIONAL Flag to designate the name of temporary SQL file after execution of psql.
+# Liquibase will attempt to use the name exactly as entered, so please ensure it complies with your OS requirements.
+# liquibase.psql.keep.temp.name=
+
+# OPTIONAL Args to pass directly to psql.
+# Note: The delimiter for args is a space eg:" " and not "," or ";" separated.
+# liquibase.psql.args=
+
+# OPTIONAL Path to a log file for the psql output
+# liquibase.psql.logFile=
+
+# OPTIONAL Name of a custom executor to use instead of psql
+# The Executor must be on the Liquibase classpath
+# liquibase.psql.executor=

liquibase-core/src/main/resources/liquibase/examples/xml/liquibase.psql.conf

@@ -0,0 +1,46 @@
+####     _     _             _ _                      _____
+##      | |   (_)           (_) |                    |  __ \
+##      | |    _  __ _ _   _ _| |__   __ _ ___  ___  | |__) | __ ___
+##      | |   | |/ _` | | | | | '_ \ / _` / __|/ _ \ |  ___/ '__/ _ \
+##      | |___| | (_| | |_| | | |_) | (_| \__ \  __/ | |   | | | (_) |
+##      \_____/_|\__, |\__,_|_|_.__/ \__,_|___/\___| |_|   |_|  \___/
+##                  | |
+##                  |_|
+##
+##      The liquibase.psql.conf file stores properties which are used during the
+##      execution of the PostgreSQL psql tool.
+##      Learn more: https://www.liquibase.org/documentation/config_properties.html
+####
+
+# The full path to the psql executable.
+# Sample Linux path
+# liquibase.psql.path=/usr/local/bin/psql
+# Sample Windows path
+# liquibase.psql.path="C:\\Program Files\\PostgreSQL\\<version>\\bin\\psql.exe"
+
+# Timeout value for the execution of the psql tool
+# Measured in seconds. -1 to disable.
+liquibase.psql.timeout=-1
+
+# Flag to indicate whether or not to keep the temporary SQL file after execution of psql.
+# True = keep False = delete (default)
+liquibase.psql.keep.temp=false
+
+# OPTIONAL Flag to designate the location to store temporary SQL file after execution of psql.
+# Liquibase will attempt to use path exactly as entered, so please ensure it complies with your OS requirements.
+# liquibase.psql.keep.temp.path=
+
+# OPTIONAL Flag to designate the name of temporary SQL file after execution of psql.
+# Liquibase will attempt to use the name exactly as entered, so please ensure it complies with your OS requirements.
+# liquibase.psql.keep.temp.name=
+
+# OPTIONAL Args to pass directly to psql.
+# Note: The delimiter for args is a space eg:" " and not "," or ";" separated.
+# liquibase.psql.args=
+
+# OPTIONAL Path to a log file for the psql output
+# liquibase.psql.logFile=
+
+# OPTIONAL Name of a custom executor to use instead of psql
+# The Executor must be on the Liquibase classpath
+# liquibase.psql.executor=