[themes] add usage instruction for themes

[Alchez]

Closes #99.

[github-actions]

Coverage Report for ./beam

Status	Category	Percentage	Covered / Total
🔴	Lines	10.6% (🎯 70%)	7 / 66
🔴	Statements	11.59% (🎯 70%)	8 / 69
🔴	Functions	5.26% (🎯 70%)	1 / 19
🔴	Branches	0% (🎯 70%)	0 / 31

File Coverage

File	Stmts	% Branch	% Funcs	% Lines	Uncovered Lines
Unchanged Files
beam/src/components/ActionFooter.vue	0%	100%	0%	0%	12, 14-16, 15, 2-3
beam/src/components/BeamModal.vue	0%	0%	0%	0%	3, 2-1, 4-5, 5
beam/src/components/BeamModalOutlet.vue	0%	100%	100%	0%	2
beam/src/components/Confirm.vue	0%	0%	0%	0%	4-5
beam/src/components/ItemCheck.vue	0%	0%	0%	0%	12, 16, 18, 20-22, 21, 2, 1
beam/src/components/ItemCount.vue	0%	0%	0%	0%	18-19, 29, 31-36, 32-35, 38-40, 39, 2, 1
beam/src/components/ListAnchor.vue	0%	100%	100%	0%	1
beam/src/components/ListItem.vue	0%	0%	0%	0%	24, 37, 3, 2-1, 10, 14
beam/src/components/ListView.vue	0%	0%	0%	0%	36, 38-40, 39, 42-44, 43, 46-52, 47-51, 50, 2, 6-null
beam/src/components/Navbar.vue	0%	0%	0%	0%	15, 17-19, 18, 2, 6, 5-4, 8-null
beam/src/components/ScanInput.vue	88.88%	100%	50%	87.5%	26

Generated in workflow #321

[github-actions]

Coverage Report for ./atable

Status	Category	Percentage	Covered / Total
🟢	Lines	74.11% (🎯 70%)	126 / 170
🟢	Statements	73.71% (🎯 70%)	129 / 175
🟢	Functions	72.72% (🎯 70%)	24 / 33
🔴	Branches	48.48% (🎯 70%)	64 / 132

File Coverage

File	Stmts	% Branch	% Funcs	% Lines	Uncovered Lines
Unchanged Files
atable/src/components/ACell.vue	94.91%	56.75%	100%	94.91%	70, 110-113, 164
atable/src/components/AExpansionRow.vue	0%	0%	0%	0%	22, 35-37, 39-41, 40, 43-62, 44-50, 46-48, 52-54, 53, 56-61, 1, 3
atable/src/components/ARow.vue	63.63%	57.14%	60%	63.63%	56, 63, 67, 71, 73-78, 74-77, 80-85, 12
atable/src/components/ATable.vue	88.46%	46.15%	100%	91.66%	155-157, 156, 156
atable/src/components/ATableHeader.vue	100%	50%	100%	100%
atable/src/components/ATableModal.vue	50%	100%	0%	50%	29
atable/src/components/index.ts	65.9%	50%	66.66%	66.66%	47-49, 48, 61, 84-86, 85, 104-116, 105-113, 106-112, 108-111, 110, 114-116, 115

Generated in workflow #321

[github-actions]

Coverage Report for ./aform

Status	Category	Percentage	Covered / Total
🟢	Lines	87.28% (🎯 70%)	206 / 236
🟢	Statements	87.08% (🎯 70%)	209 / 240
🟢	Functions	82.35% (🎯 70%)	42 / 51
🔴	Branches	68.8% (🎯 70%)	75 / 109

File Coverage

File	Stmts	% Branch	% Funcs	% Lines	Uncovered Lines
Unchanged Files
aform/src/components/AForm.vue	90.47%	40%	85.71%	90.47%	41-43, 42
aform/src/components/base/CollapseButton.vue	100%	100%	100%	100%
aform/src/components/form/ACheckbox.vue	100%	100%	100%	100%
aform/src/components/form/AComboBox.vue	0%	0%	100%	0%	2-1
aform/src/components/form/ADate.vue	85.71%	50%	100%	85.71%	42
aform/src/components/form/ADatePicker.vue	96.61%	90.9%	92.85%	96.49%	65, 27
aform/src/components/form/ADropdown.vue	91.83%	76.92%	84.61%	91.83%	55, 84-85, 93
aform/src/components/form/AFieldset.vue	90%	100%	50%	90%	8
aform/src/components/form/AFileAttach.vue	0%	0%	0%	0%	26, 33, 35-37, 36, 2, 1, 10-11, 15, 18
aform/src/components/form/ANumericInput.vue	100%	100%	100%	100%
aform/src/components/form/ATextInput.vue	100%	100%	100%	100%
aform/src/components/utilities/Login.vue	87.5%	88.88%	100%	87.5%	82-84
aform/src/directives/mask.ts	84.09%	59.09%	100%	83.72%	33-34, 41, 50, 65, 98, 103

Generated in workflow #321