chore: add backport config and added codespell pre-commit

[MyuddinKhatri]

issue - #83

Added backport config - https://github.com/tibdex/backport
Labels to be added - backport version-15 and backport version-14

Added pre-commit codespell

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
inventory_tools
__init__.py	5	0	100%
customize.py	24	24	0%	4–47
hooks.py	17	0	100%
inventory_tools/inventory_tools
__init__.py	0	0	100%
boot.py	6	6	0%	1–8
inventory_tools/inventory_tools/doctype
__init__.py	0	0	100%
inventory_tools/inventory_tools/doctype/inventory_tools_settings
__init__.py	0	0	100%
inventory_tools_settings.py	59	35	41%	16–17, 24–45, 60–65, 73–78, 85–91
test_inventory_tools_settings.py	3	0	100%
inventory_tools/inventory_tools/doctype/purchase_invoice_subcontracting_detail
__init__.py	0	0	100%
purchase_invoice_subcontracting_detail.py	3	3	0%	5–9
inventory_tools/inventory_tools/doctype/purchase_order_subcontracting_detail
__init__.py	0	0	100%
purchase_order_subcontracting_detail.py	3	0	100%
inventory_tools/inventory_tools/doctype/subcontracting_default
__init__.py	0	0	100%
subcontracting_default.py	3	3	0%	5–9
inventory_tools/inventory_tools/overrides
job_card.py	17	2	88%	25, 32
purchase_order.py	148	100	32%	22, 81–84, 93–101, 112–131, 136–154, 159–222, 234–240, 253, 262–264, 269–274
sales_order.py	24	1	96%	46
stock_entry.py	78	19	76%	77–78, 81, 87, 96, 104, 162, 168, 172, 180–200
uom.py	61	12	80%	21–23, 44–45, 84, 91, 109–114
warehouse.py	43	16	63%	12, 17, 36–37, 40, 54–68
work_order.py	251	208	17%	26–29, 32–37, 40–42, 45–46, 49–50, 57–58, 65–93, 102–112, 125–158, 175, 178–181, 191–232, 240–270, 276–289, 293–316, 320–357, 365–380, 385–471, 476–498, 512
inventory_tools/inventory_tools/report
__init__.py	0	0	100%
inventory_tools/inventory_tools/report/manufacturing_capacity
__init__.py	0	0	100%
manufacturing_capacity.py	80	55	31%	11–12, 16, 84–115, 127–133, 214–296, 311–316, 324–338
inventory_tools/inventory_tools/report/material_demand
__init__.py	0	0	100%
material_demand.py	148	9	94%	18, 207–208, 227, 240, 248, 258, 274, 315
inventory_tools/inventory_tools/report/quotation_demand
__init__.py	0	0	100%
quotation_demand.py	63	4	94%	14, 48, 164, 184
inventory_tools/tests
conftest.py	24	2	92%	29–30
test_alternative_workstation.py	14	8	43%	19–37
test_manufacturing_capacity.py	50	0	100%
test_material_demand.py	117	8	93%	47, 92, 129, 136–138, 185, 233
test_overproduction.py	93	0	100%
test_quotation_demand_report.py	71	1	99%	43
test_uom.py	26	4	85%	43–46
test_warehouse_path.py	12	0	100%
TOTAL	1443	520	64%