Make "process" a required input and configure pyconf functions globally once with user input

Closes #59 (closed) and closes #74 (closed).

• Make process a required input.
• Make "options.process" as the default input to algorithms (e.g. truth matching).
• Make process a required input to truth-matching algorithm (related to issue: #62 (closed)) and also set correct root-in-tes for Turbo process.

To be tested with: LHCb!3806 (merged), Moore!1812 (merged) and Analysis!914 (merged)

DaVinciTests/python/DaVinciTests/option_davinci_for_spruce.py

+###############################################################################
+# (c) Copyright 2022 CERN for the benefit of the LHCb Collaboration           #
+#                                                                             #
+# This software is distributed under the terms of the GNU General Public      #
+# Licence version 3 (GPL Version 3), copied verbatim in the file "COPYING".   #
+#                                                                             #
+# In applying this licence, CERN does not waive the privileges and immunities #
+# granted to it by virtue of its status as an Intergovernmental Organization  #
+# or submit itself to any jurisdiction.                                       #
+###############################################################################
+"""
+Read the output of an Sprucing job with the new DaVinci configuration.
+"""
+from FunTuple import FunctorCollection
+from FunTuple import FunTuple_Particles as Funtuple
+from FunTuple.functorcollections import Kinematics
+from DaVinci.algorithms import add_filter
+from DaVinci import Options, make_config
+from PyConf.reading import get_particles
+
+
+def main(options: Options):
+    line_B0DsK = 'SpruceB2OC_BdToDsmK_DsmToHHH_FEST'
+    line_B0Dspi = 'SpruceB2OC_BdToDsmPi_DsmToKpKmPim'
+    bd2dsk_line = get_particles(f"/Event/Spruce/{line_B0DsK}/Particles")
+    bd2dspi_line = get_particles(f"/Event/Spruce/{line_B0Dspi}/Particles")
+
+    fields_dsk = {
+        'B0': "[B0 -> D_s- K+]CC",
+        'Ds': "[B0 -> ^D_s- K+]CC",
+        'Kp': "[B0 -> D_s- ^K+]CC"
+    }
+
+    fields_dspi = {
+        'B0': "[B0 -> D_s- pi+]CC",
+        'Ds': "[B0 -> ^D_s- pi+]CC",
+        'pip': "[B0 -> D_s- ^pi+]CC",
+    }
+
+    variables = FunctorCollection({
+        'LOKI_MAXPT': 'TRACK_MAX_PT',
+        'LOKI_Muonp_PT': 'CHILD(PT, 1)',
+        'LOKI_Muonm_PT': 'CHILD(PT, 2)',
+    })
+
+    variables_extra = FunctorCollection({
+        'LOKI_NTRCKS_ABV_THRSHLD':
+        'NINTREE(ISBASIC & (PT > 15*MeV))'
+    })
+    variables += variables_extra
+
+    #FunTuple: make functor collection from the imported functor library Kinematics
+    variables_all = Kinematics()
+
+    #FunTuple: associate functor collections to field (branch) name
+    variables_dsk = {
+        'ALL': variables_all,  #adds variables to all fields
+        'B0': variables,
+        'Ds': variables_extra,
+        'Kp': variables_extra
+    }
+
+    variables_dspi = {
+        'ALL': variables_all,  #adds variables to all fields
+        'B0': variables,
+        'Ds': variables_extra,
+        'pip': variables_extra,
+    }
+
+    loki_preamble = ['TRACK_MAX_PT = MAXTREE(ISBASIC & HASTRACK, PT, -1)']
+
+    tuple_B0DsK = Funtuple(
+        name="B0DsK_Tuple",
+        tuple_name="DecayTree",
+        fields=fields_dsk,
+        variables=variables_dsk,
+        loki_preamble=loki_preamble,
+        inputs=bd2dsk_line)
+
+    tuple_B0Dspi = Funtuple(
+        name="B0Dspi_Tuple",
+        tuple_name="DecayTree",
+        fields=fields_dspi,
+        variables=variables_dspi,
+        loki_preamble=loki_preamble,
+        inputs=bd2dspi_line)
+
+    filter_B0DsK = add_filter(options, "HDRFilter_B0DsK",
+                              f"HLT_PASS('{line_B0DsK}')")
+    filter_B0Dspi = add_filter(options, "HDRFilter_B0Dspi",
+                               f"HLT_PASS('{line_B0Dspi}')")
+
+    algs = {
+        "B0DsK": [filter_B0DsK, tuple_B0DsK],
+        "B0Dspi": [filter_B0Dspi, tuple_B0Dspi]
+    }
+
+    return make_config(options, algs)