JCB-based obs+bias staging (#31)

This PR is a companion to Global Workflow PR
[#2992](NOAA-EMC/global-workflow#2992) and
GDASApp PR [#1312](NOAA-EMC/GDASApp#1312).

It add observation and bias files staging templates required for the
above Global Workflow PR.

algorithm/atmosphere/atm_bias_staging.yaml.j2

@@ -0,0 +1,10 @@
+mkdir:
+    - '{{atmosphere_obsbiasout_path}}'
+copy:
+    {% for observation_from_jcb in observations %}
+    {% if use_observer(observation_from_jcb) %}
+    {% if observation_from_jcb in bias_files %}
+    - ['{{atmosphere_obsbiasroot_path}}/{{atmosphere_obsbiasin_prefix}}{{bias_files[observation_from_jcb]}}', '{{atmosphere_obsbiasin_path}}']
+    {% endif %}
+    {% endif %}
+    {% endfor %}

algorithm/atmosphere/atm_obs_staging.yaml.j2

@@ -0,0 +1,8 @@
+mkdir:
+    - '{{atmosphere_obsdatain_path}}'
+copy:
+    {% for observation_from_jcb in observations %}
+    {% if use_observer(observation_from_jcb) %}
+    - ['{{atmosphere_obsdataroot_path}}/{{atmosphere_obsdatain_prefix}}{{observation_from_jcb}}{{atmosphere_obsdatain_suffix}}', '{{atmosphere_obsdatain_path}}']
+    {% endif %}
+    {% endfor %}