Combine requirements.txt files

These used to be split between conda-forge and main, because the main
channel would resolve dependencies quicker when installing packages on
the fly. Now that we are using specfiles, no dependency resolution
happens on CI, so we can install everything from conda-forge.

Author: rtburns-jpl

tools/imagesets/oracle8conda/dev/requirements.txt.forge.dev renamed to tools/imagesets/oracle8conda/dev/requirements.txt

@@ -1,6 +1,11 @@
 cmake>=3.18
 doxygen
+eigen
+git
 gmock
 gtest
 gxx_linux-64>=9,<10
+ninja
 pybind11
+pytest
+shapely

tools/imagesets/oracle8conda/dev/requirements.txt.main.dev

@@ -1,9 +1,14 @@
+backoff
 fftw>=3
 gdal>=2.3
 h5py
 hdf5>=1.10.2
+libgcc-ng>=9,<10
+libstdcxx-ng>=9,<10
 matplotlib
 numpy
+pyre
 python>=3.6
 ruamel.yaml
 scipy
+yamale